diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8819d08..468f28c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,7 +26,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 21
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@d156388eb19639ec20ade50009f3d199ce1e2808 # v4
       - shell: bash
         run: ./gradlew --stacktrace build
 
@@ -45,7 +45,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 21
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@d156388eb19639ec20ade50009f3d199ce1e2808 # v4
       - name: 'Publish'
         env:
           ORG_GRADLE_PROJECT_sonatypeUsername: ${{ secrets.SONATYPE_USERNAME }}
@@ -67,7 +67,7 @@ jobs:
         with:
           distribution: temurin
           java-version: 21
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@d156388eb19639ec20ade50009f3d199ce1e2808 # v4
       - name: 'Upload Documentation'
         env:
           GRGIT_USER: ${{ secrets.GH_TOKEN }}