diff --git a/Tests/TSCBasicTests/ProcessTests.swift b/Tests/TSCBasicTests/ProcessTests.swift
index cb5f98df..5c63ecf1 100644
--- a/Tests/TSCBasicTests/ProcessTests.swift
+++ b/Tests/TSCBasicTests/ProcessTests.swift
@@ -466,12 +466,7 @@ class ProcessTests: XCTestCase {
 
 fileprivate extension Process {
     private static func env() -> [String:String] {
-        var env = ProcessEnv.vars
-        #if os(macOS)
-        // Many of these tests use Python which might not be in the default `PATH` when running these tests from Xcode.
-        env["PATH"] = "\(env["PATH"] ?? ""):/usr/local/bin"
-        #endif
-        return env
+        return ProcessEnv.vars
     }
 
     private static func script(_ name: String) -> String {
diff --git a/Tests/TSCBasicTests/processInputs/deadlock-if-blocking-io b/Tests/TSCBasicTests/processInputs/deadlock-if-blocking-io
index 88ad54d0..9bc79efe 100755
--- a/Tests/TSCBasicTests/processInputs/deadlock-if-blocking-io
+++ b/Tests/TSCBasicTests/processInputs/deadlock-if-blocking-io
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 
diff --git a/Tests/TSCBasicTests/processInputs/in-to-out b/Tests/TSCBasicTests/processInputs/in-to-out
index 3b86f0d9..94490b16 100755
--- a/Tests/TSCBasicTests/processInputs/in-to-out
+++ b/Tests/TSCBasicTests/processInputs/in-to-out
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 
diff --git a/Tests/TSCBasicTests/processInputs/long-stdout-stderr b/Tests/TSCBasicTests/processInputs/long-stdout-stderr
index d630a026..684fcca5 100755
--- a/Tests/TSCBasicTests/processInputs/long-stdout-stderr
+++ b/Tests/TSCBasicTests/processInputs/long-stdout-stderr
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 
diff --git a/Tests/TSCBasicTests/processInputs/simple-stdout-stderr b/Tests/TSCBasicTests/processInputs/simple-stdout-stderr
index c4f58949..a840caee 100755
--- a/Tests/TSCBasicTests/processInputs/simple-stdout-stderr
+++ b/Tests/TSCBasicTests/processInputs/simple-stdout-stderr
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 
diff --git a/Utilities/ci.xcworkspace/xcshareddata/swiftpm/Package.resolved b/Utilities/ci.xcworkspace/xcshareddata/swiftpm/Package.resolved
new file mode 100644
index 00000000..6c5bf7fb
--- /dev/null
+++ b/Utilities/ci.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -0,0 +1,7 @@
+{
+  "object": {
+    "pins": [
+    ]
+  },
+  "version": 1
+}