diff --git a/CHANGES.md b/CHANGES.md
index 6aea102237..675d9d0888 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -10,6 +10,16 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Added
+* Added support for eclipse-cdt 4.14.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-groovy 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-jdt 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-wtp 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+### Changed
+* Updated default eclipse-cdt from 4.13.0 to 4.16.0 ([#722](https://github.com/diffplug/spotless/pull/722)). Note that version 4.17.0 is supported, but requires Java 11 or higher.
+* Updated default eclipse-groovy from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-jdt from 4.16.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-wtp from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
 
 ## [2.8.0] - 2020-10-05
 ### Added
diff --git a/_ext/eclipse-jdt/gradle.properties b/_ext/eclipse-jdt/gradle.properties
index 74734a8bf3..3da6ecf075 100644
--- a/_ext/eclipse-jdt/gradle.properties
+++ b/_ext/eclipse-jdt/gradle.properties
@@ -1,5 +1,3 @@
-# Mayor/Minor versions correspond to the minimum Eclipse version supported/tested.
-# Patch version is incremented for backward compatible patches of this library.
 artifactId=spotless-eclipse-jdt
 description=Eclipse's JDT formatter bundled for Spotless
 
diff --git a/lib-extra/src/main/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStep.java b/lib-extra/src/main/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStep.java
index 6806a21f47..f9c11ca2d0 100644
--- a/lib-extra/src/main/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStep.java
+++ b/lib-extra/src/main/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStep.java
@@ -36,7 +36,7 @@ private EclipseCdtFormatterStep() {}
 
 	private static final String NAME = "eclipse cdt formatter";
 	private static final String FORMATTER_CLASS = "com.diffplug.spotless.extra.eclipse.cdt.EclipseCdtFormatterStepImpl";
-	private static final String DEFAULT_VERSION = "4.13.0";
+	private static final String DEFAULT_VERSION = "4.16.0";
 	private static final String FORMATTER_METHOD = "format";
 
 	public static String defaultVersion() {
diff --git a/lib-extra/src/main/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStep.java b/lib-extra/src/main/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStep.java
index 96664e6475..018b54b5a3 100644
--- a/lib-extra/src/main/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStep.java
+++ b/lib-extra/src/main/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStep.java
@@ -33,7 +33,7 @@ private GrEclipseFormatterStep() {}
 	private static final String FORMATTER_CLASS = "com.diffplug.spotless.extra.eclipse.groovy.GrEclipseFormatterStepImpl";
 	private static final String FORMATTER_CLASS_OLD = "com.diffplug.gradle.spotless.groovy.eclipse.GrEclipseFormatterStepImpl";
 	private static final String MAVEN_GROUP_ARTIFACT = "com.diffplug.spotless:spotless-eclipse-groovy";
-	private static final String DEFAULT_VERSION = "4.13.0";
+	private static final String DEFAULT_VERSION = "4.17.0";
 	private static final String FORMATTER_METHOD = "format";
 
 	public static String defaultVersion() {
diff --git a/lib-extra/src/main/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStep.java b/lib-extra/src/main/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStep.java
index ebc8c037f3..e5b60c17d7 100644
--- a/lib-extra/src/main/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStep.java
+++ b/lib-extra/src/main/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStep.java
@@ -32,7 +32,7 @@ private EclipseJdtFormatterStep() {}
 	private static final String FORMATTER_CLASS_OLD = "com.diffplug.gradle.spotless.java.eclipse.EclipseFormatterStepImpl";
 	private static final String FORMATTER_CLASS = "com.diffplug.spotless.extra.eclipse.java.EclipseJdtFormatterStepImpl";
 	private static final String MAVEN_GROUP_ARTIFACT = "com.diffplug.spotless:spotless-eclipse-jdt";
-	private static final String DEFAULT_VERSION = "4.16.0";
+	private static final String DEFAULT_VERSION = "4.17.0";
 	private static final String FORMATTER_METHOD = "format";
 
 	public static String defaultVersion() {
diff --git a/lib-extra/src/main/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStep.java b/lib-extra/src/main/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStep.java
index 63e8673774..76d73b0e32 100644
--- a/lib-extra/src/main/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStep.java
+++ b/lib-extra/src/main/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStep.java
@@ -36,7 +36,7 @@ public enum EclipseWtpFormatterStep {
 
 	private static final String NAME = "eclipse wtp formatters";
 	private static final String FORMATTER_PACKAGE = "com.diffplug.spotless.extra.eclipse.wtp.";
-	private static final String DEFAULT_VERSION = "4.13.0";
+	private static final String DEFAULT_VERSION = "4.17.0";
 	private static final String FORMATTER_METHOD = "format";
 
 	private final String implementationClassName;
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.14.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.14.0.lockfile
new file mode 100644
index 0000000000..43cb98774d
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.14.0.lockfile
@@ -0,0 +1,22 @@
+# Spotless formatter based on CDT version 9.10.0 (see https://www.eclipse.org/cdt/)
+com.diffplug.spotless:spotless-eclipse-cdt:9.10.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+net.jcip:jcip-annotations:1.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.600
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.500
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.800
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.600
+org.eclipse.platform:org.eclipse.core.jobs:3.10.600
+org.eclipse.platform:org.eclipse.core.resources:3.13.600
+org.eclipse.platform:org.eclipse.core.runtime:3.17.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.300
+org.eclipse.platform:org.eclipse.equinox.common:3.10.600
+org.eclipse.platform:org.eclipse.equinox.preferences:3.7.600
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.600
+org.eclipse.platform:org.eclipse.jface.text:3.16.100
+org.eclipse.platform:org.eclipse.jface:3.18.0
+org.eclipse.platform:org.eclipse.osgi:3.15.100
+org.eclipse.platform:org.eclipse.text:3.10.0
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.16.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.16.0.lockfile
new file mode 100644
index 0000000000..3bf6b1ca01
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.16.0.lockfile
@@ -0,0 +1,22 @@
+# Spotless formatter based on CDT version 9.11.1 (see https://www.eclipse.org/cdt/)
+com.diffplug.spotless:spotless-eclipse-cdt:9.11.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.google.j2objc:j2objc-annotations:1.3
+com.ibm.icu:icu4j:64.2
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.700
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.1000
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.700
+org.eclipse.platform:org.eclipse.core.runtime:3.18.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.500
+org.eclipse.platform:org.eclipse.equinox.common:3.12.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.800
+org.eclipse.platform:org.eclipse.jface.text:3.16.300
+org.eclipse.platform:org.eclipse.jface:3.20.0
+org.eclipse.platform:org.eclipse.osgi:3.15.300
+org.eclipse.platform:org.eclipse.text:3.10.200
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.17.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.17.0.lockfile
new file mode 100644
index 0000000000..78a6db147f
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_cdt_formatter/v4.17.0.lockfile
@@ -0,0 +1,22 @@
+# Spotless formatter based on CDT version 10.0 (see https://www.eclipse.org/cdt/)
+com.diffplug.spotless:spotless-eclipse-cdt:10.0.0
+com.diffplug.spotless:spotless-eclipse-base:3.4.1
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+net.jcip:jcip-annotations:1.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.800
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.1000
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.800
+org.eclipse.platform:org.eclipse.core.runtime:3.19.0
+org.eclipse.platform:org.eclipse.equinox.app:1.5.0
+org.eclipse.platform:org.eclipse.equinox.common:3.13.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.9.0
+org.eclipse.platform:org.eclipse.jface.text:3.16.400
+org.eclipse.platform:org.eclipse.jface:3.21.0
+org.eclipse.platform:org.eclipse.osgi:3.16.0
+org.eclipse.platform:org.eclipse.text:3.10.300
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_jdt_formatter/v4.17.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_jdt_formatter/v4.17.0.lockfile
new file mode 100644
index 0000000000..47cb5f10dd
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_jdt_formatter/v4.17.0.lockfile
@@ -0,0 +1,19 @@
+# Spotless formatter based on JDT version 4.17.0 (see https://projects.eclipse.org/projects/eclipse.jdt)
+# Compare tag in M2 pom with https://git.eclipse.org/c/jdt/eclipse.jdt.core.git/log/?h=R4_17 to determine core version.
+com.diffplug.spotless:spotless-eclipse-jdt:4.8.0
+com.diffplug.spotless:spotless-eclipse-base:3.4.1
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+net.jcip:jcip-annotations:1.0
+org.eclipse.jdt:org.eclipse.jdt.core:3.23.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.800
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.800
+org.eclipse.platform:org.eclipse.core.runtime:3.19.0
+org.eclipse.platform:org.eclipse.equinox.app:1.5.0
+org.eclipse.platform:org.eclipse.equinox.common:3.13.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.9.0
+org.eclipse.platform:org.eclipse.osgi:3.16.0
+org.eclipse.platform:org.eclipse.text:3.10.300
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.14.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.14.0.lockfile
new file mode 100644
index 0000000000..102f42489f
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.14.0.lockfile
@@ -0,0 +1,25 @@
+# Spotless formatter based on Eclipse-WTP version 3.16 (see https://www.eclipse.org/webtools/)
+com.diffplug.spotless:spotless-eclipse-wtp:3.16.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+org.eclipse.emf:org.eclipse.emf.common:2.17.0
+org.eclipse.emf:org.eclipse.emf.ecore:2.20.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.600
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.500
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.800
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.600
+org.eclipse.platform:org.eclipse.core.jobs:3.10.600
+org.eclipse.platform:org.eclipse.core.resources:3.13.600
+org.eclipse.platform:org.eclipse.core.runtime:3.17.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.300
+org.eclipse.platform:org.eclipse.equinox.common:3.10.600
+org.eclipse.platform:org.eclipse.equinox.preferences:3.7.600
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.600
+org.eclipse.platform:org.eclipse.jface.text:3.16.100
+org.eclipse.platform:org.eclipse.jface:3.18.0
+org.eclipse.platform:org.eclipse.osgi.services:3.8.0
+org.eclipse.platform:org.eclipse.osgi:3.15.100
+org.eclipse.platform:org.eclipse.text:3.10.0
+org.eclipse.xsd:org.eclipse.xsd:2.12.0
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.15.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.15.0.lockfile
new file mode 100644
index 0000000000..80f47d328b
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.15.0.lockfile
@@ -0,0 +1,25 @@
+# Spotless formatter based on Eclipse-WTP version 3.17 (see https://www.eclipse.org/webtools/)
+com.diffplug.spotless:spotless-eclipse-wtp:3.17.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+org.eclipse.emf:org.eclipse.emf.common:2.18.0
+org.eclipse.emf:org.eclipse.emf.ecore:2.21.0
+org.eclipse.emf:org.eclipse.xsd:2.17.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.600
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.900
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.700
+org.eclipse.platform:org.eclipse.core.resources:3.13.700
+org.eclipse.platform:org.eclipse.core.runtime:3.17.100
+org.eclipse.platform:org.eclipse.equinox.app:1.4.400
+org.eclipse.platform:org.eclipse.equinox.common:3.11.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.7.700
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.700
+org.eclipse.platform:org.eclipse.jface.text:3.16.200
+org.eclipse.platform:org.eclipse.jface:3.19.0
+org.eclipse.platform:org.eclipse.osgi.services:3.8.0
+org.eclipse.platform:org.eclipse.osgi:3.15.200
+org.eclipse.platform:org.eclipse.text:3.10.100
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.16.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.16.0.lockfile
new file mode 100644
index 0000000000..efb3a2cdb1
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.16.0.lockfile
@@ -0,0 +1,25 @@
+# Spotless formatter based on Eclipse-WTP version 3.18 (see https://www.eclipse.org/webtools/)
+com.diffplug.spotless:spotless-eclipse-wtp:3.18.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+org.eclipse.emf:org.eclipse.emf.common:2.19.0
+org.eclipse.emf:org.eclipse.emf.ecore:2.22.0
+org.eclipse.emf:org.eclipse.xsd:2.17.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.700
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.1000
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.700
+org.eclipse.platform:org.eclipse.core.runtime:3.18.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.500
+org.eclipse.platform:org.eclipse.equinox.common:3.12.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.800
+org.eclipse.platform:org.eclipse.jface.text:3.16.300
+org.eclipse.platform:org.eclipse.jface:3.20.0
+org.eclipse.platform:org.eclipse.osgi.services:3.8.0
+org.eclipse.platform:org.eclipse.osgi:3.15.300
+org.eclipse.platform:org.eclipse.text:3.10.200
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.17.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.17.0.lockfile
new file mode 100644
index 0000000000..6960ea01b3
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_wtp_formatters/v4.17.0.lockfile
@@ -0,0 +1,26 @@
+# Spotless formatter based on Eclipse-WTP version 3.19 (see https://www.eclipse.org/webtools/)
+com.diffplug.spotless:spotless-eclipse-wtp:3.19.0
+com.diffplug.spotless:spotless-eclipse-base:3.4.1
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+com.ibm.icu:icu4j:64.2
+net.jcip:jcip-annotations:1.0
+org.eclipse.emf:org.eclipse.emf.common:2.20.0
+org.eclipse.emf:org.eclipse.emf.ecore:2.23.0
+org.eclipse.emf:org.eclipse.xsd:2.18.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.800
+org.eclipse.platform:org.eclipse.core.filebuffers:3.6.1000
+org.eclipse.platform:org.eclipse.core.filesystem:1.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.800
+org.eclipse.platform:org.eclipse.core.runtime:3.19.0
+org.eclipse.platform:org.eclipse.equinox.app:1.5.0
+org.eclipse.platform:org.eclipse.equinox.common:3.13.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.9.0
+org.eclipse.platform:org.eclipse.jface.text:3.16.400
+org.eclipse.platform:org.eclipse.jface:3.21.0
+org.eclipse.platform:org.eclipse.osgi.services:3.9.0
+org.eclipse.platform:org.eclipse.osgi:3.16.0
+org.eclipse.platform:org.eclipse.text:3.10.300
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.14.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.14.0.lockfile
new file mode 100644
index 0000000000..bca432c337
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.14.0.lockfile
@@ -0,0 +1,18 @@
+# Spotless formatter based on Groovy-Eclipse version 3.6.0 (see https://github.com/groovy/groovy-eclipse/releases)
+com.diffplug.spotless:spotless-eclipse-groovy:3.6.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+org.eclipse.platform:org.eclipse.core.commands:3.9.600
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.500
+org.eclipse.platform:org.eclipse.core.jobs:3.10.600
+org.eclipse.platform:org.eclipse.core.resources:3.13.600
+org.eclipse.platform:org.eclipse.core.runtime:3.17.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.300
+org.eclipse.platform:org.eclipse.equinox.common:3.10.600
+org.eclipse.platform:org.eclipse.equinox.preferences:3.7.600
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.600
+org.eclipse.platform:org.eclipse.jface.text:3.16.100
+org.eclipse.platform:org.eclipse.jface:3.18.0
+org.eclipse.platform:org.eclipse.osgi:3.15.100
+org.eclipse.platform:org.eclipse.text:3.10.0
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.15.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.15.0.lockfile
new file mode 100644
index 0000000000..fc91fae066
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.15.0.lockfile
@@ -0,0 +1,18 @@
+# Spotless formatter based on Groovy-Eclipse version 3.7.0 (see https://github.com/groovy/groovy-eclipse/releases)
+com.diffplug.spotless:spotless-eclipse-groovy:3.7.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.600
+org.eclipse.platform:org.eclipse.core.jobs:3.10.700
+org.eclipse.platform:org.eclipse.core.resources:3.13.700
+org.eclipse.platform:org.eclipse.core.runtime:3.17.100
+org.eclipse.platform:org.eclipse.equinox.app:1.4.400
+org.eclipse.platform:org.eclipse.equinox.common:3.11.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.7.700
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.700
+org.eclipse.platform:org.eclipse.jface.text:3.16.200
+org.eclipse.platform:org.eclipse.jface:3.19.0
+org.eclipse.platform:org.eclipse.osgi:3.15.200
+org.eclipse.platform:org.eclipse.text:3.10.100
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.16.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.16.0.lockfile
new file mode 100644
index 0000000000..2c5f4ccd03
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.16.0.lockfile
@@ -0,0 +1,18 @@
+# Spotless formatter based on Groovy-Eclipse version 3.8.0 (see https://github.com/groovy/groovy-eclipse/releases)
+com.diffplug.spotless:spotless-eclipse-groovy:3.8.0
+com.diffplug.spotless:spotless-eclipse-base:3.3.0
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.700
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.700
+org.eclipse.platform:org.eclipse.core.runtime:3.18.0
+org.eclipse.platform:org.eclipse.equinox.app:1.4.500
+org.eclipse.platform:org.eclipse.equinox.common:3.12.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.8.800
+org.eclipse.platform:org.eclipse.jface.text:3.16.300
+org.eclipse.platform:org.eclipse.jface:3.20.0
+org.eclipse.platform:org.eclipse.osgi:3.15.300
+org.eclipse.platform:org.eclipse.text:3.10.200
diff --git a/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.17.0.lockfile b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.17.0.lockfile
new file mode 100644
index 0000000000..5242d0da8c
--- /dev/null
+++ b/lib-extra/src/main/resources/com/diffplug/spotless/extra/groovy_eclipse_formatter/v4.17.0.lockfile
@@ -0,0 +1,19 @@
+# Spotless formatter based on Groovy-Eclipse version 3.9.0 (see https://github.com/groovy/groovy-eclipse/releases)
+com.diffplug.spotless:spotless-eclipse-groovy:3.9.0
+com.diffplug.spotless:spotless-eclipse-base:3.4.1
+com.github.spotbugs:spotbugs-annotations:4.0.2
+com.google.code.findbugs:jsr305:3.0.2
+net.jcip:jcip-annotations:1.0
+org.eclipse.platform:org.eclipse.core.commands:3.9.700
+org.eclipse.platform:org.eclipse.core.contenttype:3.7.800
+org.eclipse.platform:org.eclipse.core.jobs:3.10.800
+org.eclipse.platform:org.eclipse.core.resources:3.13.800
+org.eclipse.platform:org.eclipse.core.runtime:3.19.0
+org.eclipse.platform:org.eclipse.equinox.app:1.5.0
+org.eclipse.platform:org.eclipse.equinox.common:3.13.0
+org.eclipse.platform:org.eclipse.equinox.preferences:3.8.0
+org.eclipse.platform:org.eclipse.equinox.registry:3.9.0
+org.eclipse.platform:org.eclipse.jface.text:3.16.400
+org.eclipse.platform:org.eclipse.jface:3.21.0
+org.eclipse.platform:org.eclipse.osgi:3.16.0
+org.eclipse.platform:org.eclipse.text:3.10.300
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepOldTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepOldTest.java
new file mode 100644
index 0000000000..85ea2ea365
--- /dev/null
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepOldTest.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2016-2020 DiffPlug
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.diffplug.spotless.extra.cpp;
+
+/** Older versions of CDT support Java 8 or higher */
+public class EclipseCdtFormatterStepOldTest extends EclipseCdtFormatterStepTest {
+
+	@Override
+	protected String[] getSupportedVersions() {
+		return new String[]{"4.7.3a", "4.11.0", "4.12.0", "4.13.0", "4.14.0", "4.16.0"};
+	}
+
+	@Override
+	protected void makeAssumptions() {}
+
+}
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepTest.java
index 079f255f93..e3798f53e7 100644
--- a/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepTest.java
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/cpp/EclipseCdtFormatterStepTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 DiffPlug
+ * Copyright 2016-2020 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,6 +16,7 @@
 package com.diffplug.spotless.extra.cpp;
 
 import com.diffplug.spotless.FormatterStep;
+import com.diffplug.spotless.JreVersion;
 import com.diffplug.spotless.TestProvisioner;
 import com.diffplug.spotless.extra.EclipseBasedStepBuilder;
 import com.diffplug.spotless.extra.eclipse.EclipseCommonTests;
@@ -24,7 +25,12 @@ public class EclipseCdtFormatterStepTest extends EclipseCommonTests {
 
 	@Override
 	protected String[] getSupportedVersions() {
-		return new String[]{"4.7.3a", "4.11.0", "4.12.0", "4.13.0"};
+		return new String[]{"4.17.0"};
+	}
+
+	@Override
+	protected void makeAssumptions() {
+		JreVersion.assume11OrGreater();
 	}
 
 	@Override
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepOldTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepOldTest.java
new file mode 100644
index 0000000000..9060b64fb1
--- /dev/null
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepOldTest.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2016-2020 DiffPlug
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.diffplug.spotless.extra.groovy;
+
+import com.diffplug.spotless.JreVersion;
+
+/** Older versions only support Java version 11 or lower */
+public class GrEclipseFormatterStepOldTest extends GrEclipseFormatterStepTest {
+	@Override
+	protected String[] getSupportedVersions() {
+		return new String[]{"2.3.0", "4.6.3", "4.8.0", "4.8.1", "4.10.0", "4.12.0", "4.13.0", "4.14.0", "4.15.0", "4.16.0"};
+	}
+
+	@Override
+	protected void makeAssumptions() {
+		// JRE 11 warns like this:
+		//		WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
+		//		WARNING: All illegal access operations will be denied in a future release
+		// And after that it fails like this:
+		//		Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
+		//		at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:39)
+		//		at org.codehaus.groovy.ast.ClassHelper.makeCached(ClassHelper.java:133)
+		//		at org.codehaus.groovy.ast.ClassHelper.<clinit>(ClassHelper.java:67)
+		//		at org.codehaus.groovy.classgen.Verifier.<clinit>(Verifier.java:113)
+		//		at org.codehaus.groovy.control.CompilationUnit.<init>(CompilationUnit.java:158)
+		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.makeCompilationUnit(GroovyParser.java:467)
+		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.<init>(GroovyParser.java:247)
+		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.<init>(GroovyParser.java:216)
+		//		at org.codehaus.groovy.eclipse.core.compiler.GroovySnippetParser.dietParse(GroovySnippetParser.java:105)
+		//		at org.codehaus.groovy.eclipse.core.compiler.GroovySnippetParser.parse(GroovySnippetParser.java:69)
+		//		at org.codehaus.groovy.eclipse.refactoring.core.utils.ASTTools.getASTNodeFromSource(ASTTools.java:204)
+		//		at org.codehaus.groovy.eclipse.refactoring.formatter.DefaultGroovyFormatter.initCodebase(DefaultGroovyFormatter.java:109)
+		//		at org.codehaus.groovy.eclipse.refactoring.formatter.DefaultGroovyFormatter.format(DefaultGroovyFormatter.java:121)
+		//		at com.diffplug.spotless.extra.eclipse.groovy.GrEclipseFormatterStepImpl.format(GrEclipseFormatterStepImpl.java:81)
+		JreVersion.assume11OrLess();
+	}
+
+}
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepTest.java
index 74a6627fd8..5898951fd0 100644
--- a/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepTest.java
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepTest.java
@@ -16,7 +16,6 @@
 package com.diffplug.spotless.extra.groovy;
 
 import com.diffplug.spotless.FormatterStep;
-import com.diffplug.spotless.JreVersion;
 import com.diffplug.spotless.TestProvisioner;
 import com.diffplug.spotless.extra.EclipseBasedStepBuilder;
 import com.diffplug.spotless.extra.eclipse.EclipseCommonTests;
@@ -24,7 +23,7 @@
 public class GrEclipseFormatterStepTest extends EclipseCommonTests {
 	@Override
 	protected String[] getSupportedVersions() {
-		return new String[]{"2.3.0", "4.6.3", "4.8.0", "4.8.1", "4.10.0", "4.12.0", "4.13.0"};
+		return new String[]{"4.17.0"};
 	}
 
 	@Override
@@ -37,30 +36,6 @@ protected String getTestExpectation(String version) {
 		return "class F{\n\tdef m(){}\n}";
 	}
 
-	@Override
-	protected void makeAssumptions() {
-		// JRE 11 warns like this:
-		//		WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
-		//		WARNING: All illegal access operations will be denied in a future release
-		// And after that it fails like this:
-		//		Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
-		//		at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:39)
-		//		at org.codehaus.groovy.ast.ClassHelper.makeCached(ClassHelper.java:133)
-		//		at org.codehaus.groovy.ast.ClassHelper.<clinit>(ClassHelper.java:67)
-		//		at org.codehaus.groovy.classgen.Verifier.<clinit>(Verifier.java:113)
-		//		at org.codehaus.groovy.control.CompilationUnit.<init>(CompilationUnit.java:158)
-		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.makeCompilationUnit(GroovyParser.java:467)
-		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.<init>(GroovyParser.java:247)
-		//		at org.codehaus.jdt.groovy.internal.compiler.ast.GroovyParser.<init>(GroovyParser.java:216)
-		//		at org.codehaus.groovy.eclipse.core.compiler.GroovySnippetParser.dietParse(GroovySnippetParser.java:105)
-		//		at org.codehaus.groovy.eclipse.core.compiler.GroovySnippetParser.parse(GroovySnippetParser.java:69)
-		//		at org.codehaus.groovy.eclipse.refactoring.core.utils.ASTTools.getASTNodeFromSource(ASTTools.java:204)
-		//		at org.codehaus.groovy.eclipse.refactoring.formatter.DefaultGroovyFormatter.initCodebase(DefaultGroovyFormatter.java:109)
-		//		at org.codehaus.groovy.eclipse.refactoring.formatter.DefaultGroovyFormatter.format(DefaultGroovyFormatter.java:121)
-		//		at com.diffplug.spotless.extra.eclipse.groovy.GrEclipseFormatterStepImpl.format(GrEclipseFormatterStepImpl.java:81)
-		JreVersion.assume11OrLess();
-	}
-
 	@Override
 	protected FormatterStep createStep(String version) {
 		EclipseBasedStepBuilder builder = GrEclipseFormatterStep.createBuilder(TestProvisioner.mavenCentral());
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStepTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStepTest.java
index a0001423dc..74d103acea 100644
--- a/lib-extra/src/test/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStepTest.java
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/java/EclipseJdtFormatterStepTest.java
@@ -25,7 +25,7 @@ public class EclipseJdtFormatterStepTest extends EclipseCommonTests {
 	@Override
 	protected String[] getSupportedVersions() {
 		return new String[]{"4.6.1", "4.6.2", "4.6.3", "4.7.0", "4.7.1", "4.7.2", "4.7.3a", "4.8.0", "4.9.0", "4.10.0",
-				"4.11.0", "4.12.0", "4.13.0", "4.14.0", "4.15.0", "4.16.0"};
+				"4.11.0", "4.12.0", "4.13.0", "4.14.0", "4.15.0", "4.16.0", "4.17.0"};
 	}
 
 	@Override
diff --git a/lib-extra/src/test/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStepTest.java b/lib-extra/src/test/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStepTest.java
index 90b2e81258..22e32ac3f3 100644
--- a/lib-extra/src/test/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStepTest.java
+++ b/lib-extra/src/test/java/com/diffplug/spotless/extra/wtp/EclipseWtpFormatterStepTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 DiffPlug
+ * Copyright 2016-2020 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -76,7 +76,7 @@ public static Iterable<WTP> data() {
 
 	@Override
 	protected String[] getSupportedVersions() {
-		return new String[]{"4.7.3a", "4.7.3b", "4.8.0", "4.12.0", "4.13.0"};
+		return new String[]{"4.7.3a", "4.7.3b", "4.8.0", "4.12.0", "4.13.0", "4.14.0", "4.15.0", "4.16.0", "4.17.0"};
 	}
 
 	@Override
diff --git a/plugin-gradle/CHANGES.md b/plugin-gradle/CHANGES.md
index 2e4943a02f..59d94f497c 100644
--- a/plugin-gradle/CHANGES.md
+++ b/plugin-gradle/CHANGES.md
@@ -3,6 +3,16 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
+### Added
+* Added support for eclipse-cdt 4.14.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-groovy 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-jdt 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-wtp 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+### Changed
+* Updated default eclipse-cdt from 4.13.0 to 4.16.0 ([#722](https://github.com/diffplug/spotless/pull/722)). Note that version 4.17.0 is supported, but requires Java 11 or higher.
+* Updated default eclipse-groovy from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-jdt from 4.16.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-wtp from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
 
 ## [5.6.1] - 2020-09-21
 ### Fixed
diff --git a/plugin-maven/CHANGES.md b/plugin-maven/CHANGES.md
index 782a1e8705..28c9ccdf24 100644
--- a/plugin-maven/CHANGES.md
+++ b/plugin-maven/CHANGES.md
@@ -3,6 +3,16 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Added
+* Added support for eclipse-cdt 4.14.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-groovy 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-jdt 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Added support for eclipse-wtp 4.14.0, 4.15.0, 4.16.0 and 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+### Changed
+* Updated default eclipse-cdt from 4.13.0 to 4.16.0 ([#722](https://github.com/diffplug/spotless/pull/722)). Note that version 4.17.0 is supported, but requires Java 11 or higher.
+* Updated default eclipse-groovy from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-jdt from 4.16.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
+* Updated default eclipse-wtp from 4.13.0 to 4.17.0 ([#722](https://github.com/diffplug/spotless/pull/722)).
 
 ## [2.4.2] - 2020-10-05
 ### Fixed