diff --git a/.github/workflows/integ-test-cache-cleanup.yml b/.github/workflows/integ-test-cache-cleanup.yml
index c6d4405..060547d 100644
--- a/.github/workflows/integ-test-cache-cleanup.yml
+++ b/.github/workflows/integ-test-cache-cleanup.yml
@@ -35,7 +35,7 @@ jobs:
         cache-read-only: false # For testing, allow writing cache entries on non-default branches
     - name: Build with 3.1
       working-directory: sources/test/jest/resources/cache-cleanup
-      run: gradle --no-daemon --build-cache -Dcommons_math3_version="3.1" build
+      run: ./gradlew --no-daemon --build-cache -Dcommons_math3_version="3.1" build
 
   # Second build will use the cache from the first build, but cleanup should remove unused artifacts
   assemble-build:
@@ -58,7 +58,7 @@ jobs:
         gradle-home-cache-cleanup: true
     - name: Build with 3.1.1
       working-directory: sources/test/jest/resources/cache-cleanup
-      run: gradle --no-daemon --build-cache -Dcommons_math3_version="3.1.1" build
+      run: ./gradlew --no-daemon --build-cache -Dcommons_math3_version="3.1.1" build
 
   check-clean-cache:
     needs: assemble-build
@@ -78,7 +78,9 @@ jobs:
       with:
         cache-read-only: true
     - name: Report Gradle User Home
-      run: du -hc ~/.gradle/caches/modules-2
+      run: |
+        du -hc ~/.gradle/caches/modules-2
+        du -hc ~/.gradle/wrapper/dists
     - name: Verify cleaned cache
       shell: bash
       run: |
@@ -90,3 +92,7 @@ jobs:
           echo "::error ::Should NOT find commons-math3 3.1 in cache"
           exit 1
         fi
+        if [ ! -e ~/.gradle/wrapper/dists/gradle-8.0.2-bin ]; then
+          echo "::error ::Should find gradle-8.0.2 in wrapper/dists"
+          exit 1
+        fi
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6c3313d..2fed3d0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -21,7 +21,6 @@ Example running a single job:
 `./build act -W .github/workflows/integ-test-caching-config.yml -j cache-disabled-pre-existing-gradle-home`
 
 Known issues:
-- `integ-test-cache-cleanup.yml` fails because `gradle` is not installed on the runner. Should be fixed by #33.
 - `integ-test-detect-java-toolchains.yml` fails when running on a `linux/amd64` container, since the expected pre-installed JDKs are not present. Should be fixed by #89.
 - `act` is not yet compatible with `actions/upload-artifact@v4` (or related toolkit functions)
     - See https://github.com/nektos/act/pull/2224