diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ce8985adf1..7f2f2a2ab41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,30 @@
 # Changelog
 
+## [6.91.0](https://github.com/googleapis/java-spanner/compare/v6.90.0...v6.91.0) (2025-04-17)
+
+
+### Features
+
+* [Internal] open telemetry built in metrics for GRPC ([#3709](https://github.com/googleapis/java-spanner/issues/3709)) ([cd76c73](https://github.com/googleapis/java-spanner/commit/cd76c73d838a9ccde2c8c11fc63144a62d76886c))
+* Add java sample for the pre-splitting feature ([#3713](https://github.com/googleapis/java-spanner/issues/3713)) ([e97b92e](https://github.com/googleapis/java-spanner/commit/e97b92ea4728bc8f013ff73478de4af9eaa1793b))
+* Add TransactionMutationLimitExceededException as cause to SpannerBatchUpdateException ([#3723](https://github.com/googleapis/java-spanner/issues/3723)) ([4cf5261](https://github.com/googleapis/java-spanner/commit/4cf52613c6c8280fdb864f5b8d04f8fb6ea55e16))
+* Built in metrics for afe latency and connectivity error ([#3724](https://github.com/googleapis/java-spanner/issues/3724)) ([e13a2f9](https://github.com/googleapis/java-spanner/commit/e13a2f9c5cadd15ab5a565c7dd1c1eec64c09488))
+* Support unnamed parameters ([#3820](https://github.com/googleapis/java-spanner/issues/3820)) ([1afd815](https://github.com/googleapis/java-spanner/commit/1afd815869785588dfd03ffc12e381e32c4aa0fe))
+
+
+### Bug Fixes
+
+* Add default implementations for Interval methods in AbstractStructReader ([#3722](https://github.com/googleapis/java-spanner/issues/3722)) ([97f4544](https://github.com/googleapis/java-spanner/commit/97f45448ecb51bd20699d1f163f78b2a7736b21f))
+* Set transaction isolation level had no effect ([#3718](https://github.com/googleapis/java-spanner/issues/3718)) ([b382999](https://github.com/googleapis/java-spanner/commit/b382999f42d1b643472cf3f605f8c6dc839dec19))
+
+
+### Performance Improvements
+
+* Cache the key used for OTEL traces and metrics ([#3814](https://github.com/googleapis/java-spanner/issues/3814)) ([c5a2045](https://github.com/googleapis/java-spanner/commit/c5a20452ad2ed5a8f1ac12cca4072a86f4457b93))
+* Optimize parsing in Connection API ([#3800](https://github.com/googleapis/java-spanner/issues/3800)) ([a2780ed](https://github.com/googleapis/java-spanner/commit/a2780edb3d9d4972c78befd097692f626a6a4bea))
+* Qualify statements without removing comments ([#3810](https://github.com/googleapis/java-spanner/issues/3810)) ([d358cb9](https://github.com/googleapis/java-spanner/commit/d358cb96e33bdf6de6528d03c884aa702b40b802))
+* Remove all calls to getSqlWithoutComments ([#3822](https://github.com/googleapis/java-spanner/issues/3822)) ([0e1e14c](https://github.com/googleapis/java-spanner/commit/0e1e14c0e8c1f3726c4d3cfd836c580b3b4122d0))
+
 ## [6.90.0](https://github.com/googleapis/java-spanner/compare/v6.89.0...v6.90.0) (2025-03-31)
 
 
diff --git a/README.md b/README.md
index b3edd324c8e..4517cb7908f 100644
--- a/README.md
+++ b/README.md
@@ -56,13 +56,13 @@ implementation 'com.google.cloud:google-cloud-spanner'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-spanner:6.90.0'
+implementation 'com.google.cloud:google-cloud-spanner:6.91.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-spanner" % "6.90.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-spanner" % "6.91.0"
 ```
 
 ## Authentication
@@ -728,7 +728,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-spanner/java11.html
 [stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-spanner.svg
-[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-spanner/6.90.0
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-spanner/6.91.0
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
 [auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
 [predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles
diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index eeeb9afb370..81178731770 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
 
   <properties>
diff --git a/google-cloud-spanner-bom/pom.xml b/google-cloud-spanner-bom/pom.xml
index ac30caa8d2f..8bf2e1c11ca 100644
--- a/google-cloud-spanner-bom/pom.xml
+++ b/google-cloud-spanner-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-bom</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -53,43 +53,43 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
         <type>test-jar</type>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-spanner-executor/pom.xml b/google-cloud-spanner-executor/pom.xml
index 8a92dae26e2..285ea1f507c 100644
--- a/google-cloud-spanner-executor/pom.xml
+++ b/google-cloud-spanner-executor/pom.xml
@@ -5,14 +5,14 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-executor</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-executor:current} -->
+  <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner-executor:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Spanner Executor</name>
 
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
 
   <properties>
diff --git a/google-cloud-spanner/pom.xml b/google-cloud-spanner/pom.xml
index 909b96698c5..04495b8c6f6 100644
--- a/google-cloud-spanner/pom.xml
+++ b/google-cloud-spanner/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Spanner</name>
   <url>https://github.com/googleapis/java-spanner</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-spanner</site.installationModule>
diff --git a/grpc-google-cloud-spanner-admin-database-v1/pom.xml b/grpc-google-cloud-spanner-admin-database-v1/pom.xml
index abd7d3cbe01..077b75ea822 100644
--- a/grpc-google-cloud-spanner-admin-database-v1/pom.xml
+++ b/grpc-google-cloud-spanner-admin-database-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
   <name>grpc-google-cloud-spanner-admin-database-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-admin-database-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-spanner-admin-instance-v1/pom.xml b/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
index a8ad517302d..a6886ab7e5c 100644
--- a/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
+++ b/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
   <name>grpc-google-cloud-spanner-admin-instance-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-admin-instance-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-spanner-executor-v1/pom.xml b/grpc-google-cloud-spanner-executor-v1/pom.xml
index 21370e0e5bf..d408c03cb91 100644
--- a/grpc-google-cloud-spanner-executor-v1/pom.xml
+++ b/grpc-google-cloud-spanner-executor-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-executor-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-executor-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-executor-v1:current} -->
   <name>grpc-google-cloud-spanner-executor-v1</name>
   <description>GRPC library for google-cloud-spanner</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-spanner-v1/pom.xml b/grpc-google-cloud-spanner-v1/pom.xml
index d5864a6d25d..593671c7e17 100644
--- a/grpc-google-cloud-spanner-v1/pom.xml
+++ b/grpc-google-cloud-spanner-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
   <name>grpc-google-cloud-spanner-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 7218a125c44..3d5198c6557 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-parent</artifactId>
   <packaging>pom</packaging>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <name>Google Cloud Spanner Parent</name>
   <url>https://github.com/googleapis/java-spanner</url>
   <description>
@@ -61,47 +61,47 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-executor-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-executor-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-executor-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-executor-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-executor-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-executor-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.91.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
-        <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-spanner-admin-database-v1/pom.xml b/proto-google-cloud-spanner-admin-database-v1/pom.xml
index 57e9658f42b..085ef085551 100644
--- a/proto-google-cloud-spanner-admin-database-v1/pom.xml
+++ b/proto-google-cloud-spanner-admin-database-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
   <name>proto-google-cloud-spanner-admin-database-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-admin-database-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-spanner-admin-instance-v1/pom.xml b/proto-google-cloud-spanner-admin-instance-v1/pom.xml
index afdc24bdf49..e46c4b9efcc 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/pom.xml
+++ b/proto-google-cloud-spanner-admin-instance-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
   <name>proto-google-cloud-spanner-admin-instance-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-admin-instance-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-spanner-executor-v1/pom.xml b/proto-google-cloud-spanner-executor-v1/pom.xml
index dd500461c50..ce5af9706ca 100644
--- a/proto-google-cloud-spanner-executor-v1/pom.xml
+++ b/proto-google-cloud-spanner-executor-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-executor-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-executor-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-executor-v1:current} -->
   <name>proto-google-cloud-spanner-executor-v1</name>
   <description>Proto library for google-cloud-spanner</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-spanner-v1/pom.xml b/proto-google-cloud-spanner-v1/pom.xml
index 1f8459de579..cf10ceaf6ca 100644
--- a/proto-google-cloud-spanner-v1/pom.xml
+++ b/proto-google-cloud-spanner-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-v1</artifactId>
-  <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+  <version>6.91.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
   <name>proto-google-cloud-spanner-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.90.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.91.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 373b486392a..6b531c8794d 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -32,7 +32,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.90.1-SNAPSHOT</version>
+      <version>6.91.0</version>
     </dependency>
     <!-- {x-version-update-end} -->
     
diff --git a/versions.txt b/versions.txt
index c0b6d080a2c..d442de9dad6 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,13 +1,13 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-cloud-spanner-admin-instance-v1:6.90.0:6.90.1-SNAPSHOT
-proto-google-cloud-spanner-v1:6.90.0:6.90.1-SNAPSHOT
-proto-google-cloud-spanner-admin-database-v1:6.90.0:6.90.1-SNAPSHOT
-grpc-google-cloud-spanner-v1:6.90.0:6.90.1-SNAPSHOT
-grpc-google-cloud-spanner-admin-instance-v1:6.90.0:6.90.1-SNAPSHOT
-grpc-google-cloud-spanner-admin-database-v1:6.90.0:6.90.1-SNAPSHOT
-google-cloud-spanner:6.90.0:6.90.1-SNAPSHOT
-google-cloud-spanner-executor:6.90.0:6.90.1-SNAPSHOT
-proto-google-cloud-spanner-executor-v1:6.90.0:6.90.1-SNAPSHOT
-grpc-google-cloud-spanner-executor-v1:6.90.0:6.90.1-SNAPSHOT
+proto-google-cloud-spanner-admin-instance-v1:6.91.0:6.91.0
+proto-google-cloud-spanner-v1:6.91.0:6.91.0
+proto-google-cloud-spanner-admin-database-v1:6.91.0:6.91.0
+grpc-google-cloud-spanner-v1:6.91.0:6.91.0
+grpc-google-cloud-spanner-admin-instance-v1:6.91.0:6.91.0
+grpc-google-cloud-spanner-admin-database-v1:6.91.0:6.91.0
+google-cloud-spanner:6.91.0:6.91.0
+google-cloud-spanner-executor:6.91.0:6.91.0
+proto-google-cloud-spanner-executor-v1:6.91.0:6.91.0
+grpc-google-cloud-spanner-executor-v1:6.91.0:6.91.0