diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e5b932a..934451c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,22 +16,22 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         with:
           fetch-depth: 0
 
       - name: Validate Gradle Wrapper
-        uses: gradle/wrapper-validation-action@v1
+        uses: gradle/wrapper-validation-action@56b90f209b02bf6d1deae490e9ef18b21a389cd4 # v1
 
       - name: Download Java JDK
-        uses: typelevel/download-java@v2
+        uses: typelevel/download-java@817e8c0d48dc2e88e155a8e4f69ba493bef621be # v2
         id: download-java
         with:
           distribution: temurin
           java-version: 11
 
       - name: Setup Java JDK
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4
         with:
           distribution: jdkfile
           java-version: 11
@@ -43,7 +43,7 @@ jobs:
           arguments: build --info
 
       - name: Publish Test Results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4
         if: always()
         with:
           name: test-results
diff --git a/.github/workflows/dependency-graph.yml b/.github/workflows/dependency-graph.yml
index 6568516..5dcb2c9 100644
--- a/.github/workflows/dependency-graph.yml
+++ b/.github/workflows/dependency-graph.yml
@@ -14,22 +14,22 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         with:
           fetch-depth: 0
 
       - name: Validate Gradle Wrapper
-        uses: gradle/wrapper-validation-action@v1
+        uses: gradle/wrapper-validation-action@56b90f209b02bf6d1deae490e9ef18b21a389cd4 # v1
 
       - name: Download Java JDK
-        uses: typelevel/download-java@v2
+        uses: typelevel/download-java@817e8c0d48dc2e88e155a8e4f69ba493bef621be # v2
         id: download-java
         with:
           distribution: temurin
           java-version: 11
 
       - name: Setup Java JDK
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4
         with:
           distribution: jdkfile
           java-version: 11
diff --git a/.github/workflows/test-report.yml b/.github/workflows/test-report.yml
index ecb3f3e..4d71ed6 100644
--- a/.github/workflows/test-report.yml
+++ b/.github/workflows/test-report.yml
@@ -14,14 +14,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download Test Report
-        uses: dawidd6/action-download-artifact@v2
+        uses: dawidd6/action-download-artifact@268677152d06ba59fcec7a7f0b5d961b6ccd7e1e # v2
         with:
           name: test-results
           workflow: ${{ github.event.workflow.id }}
           run_id: ${{ github.event.workflow_run.id }}
 
       - name: Publish Test Report
-        uses: mikepenz/action-junit-report@v3
+        uses: mikepenz/action-junit-report@150e2f992e4fad1379da2056d1d1c279f520e058 # v3
         with:
           commit: ${{ github.event.workflow_run.head_sha }}
           report_paths: "**/build/test-results/*/TEST-*.xml"
\ No newline at end of file