diff --git a/.github/workflows/pull-request-check.yml b/.github/workflows/pull-request-check.yml
index 94e2f767..4e7d22c7 100644
--- a/.github/workflows/pull-request-check.yml
+++ b/.github/workflows/pull-request-check.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Check code style
         uses: dbelyaev/action-checkstyle@dda83f966cf441299a78f67585ee4aae30bcdcdd # v1.16.5
@@ -20,7 +20,7 @@ jobs:
           fail_on_error: true
 
       - name: Setup JDK 17
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@8df1039502a15bceb9433410b1a100fbe190c53b # v4
         with:
           distribution: 'temurin'
           java-version: '17'
diff --git a/.github/workflows/release-workflow.yml b/.github/workflows/release-workflow.yml
index 38f26d23..89e04b2f 100644
--- a/.github/workflows/release-workflow.yml
+++ b/.github/workflows/release-workflow.yml
@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
 
       - name: Check code style
@@ -44,7 +44,7 @@ jobs:
 
       # Required to have Maven settings.xml set up correctly
       - name: Setup JDK 17
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@8df1039502a15bceb9433410b1a100fbe190c53b # v4
         with:
           distribution: 'temurin'
           java-version: '17'