diff --git a/.github/workflows/run-all-tests-pr.yml b/.github/workflows/run-all-tests-pr.yml
index b068c7bbd..8869ac3e3 100644
--- a/.github/workflows/run-all-tests-pr.yml
+++ b/.github/workflows/run-all-tests-pr.yml
@@ -17,23 +17,15 @@ jobs:
     name: Build & Test
     strategy:
       matrix:
-        os: [ubuntu-22.04, windows-2019, macos-13]
-        jdk: [21]
+        os: [macos-13]
+        jdk: [8, 21]
         include:
           - jdk: 21
             # Workaround for https://github.com/bazelbuild/bazel/issues/14502
             extra_bazel_args: "--jvmopt=-Djava.security.manager=allow"
-#          - os: ubuntu-22.04
-#            arch: "linux"
-#            bazel_args: "//launcher/android:jazzer_android"
-          - os: ubuntu-22.04
-            # Use JDK 8 only on Ubuntu in PRs.
-            jdk: 8
           - os: macos-13
             arch: "macos-arm64"
             bazel_args: "--xcode_version_config=//.github:host_xcodes"
-          - os: windows-2019
-            arch: "windows"
 
     steps:
       - uses: actions/checkout@v4