diff --git a/.github/workflows/check-commit-message.yml b/.github/workflows/check-commit-message.yml
index 4a11e8b0..c2bca464 100644
--- a/.github/workflows/check-commit-message.yml
+++ b/.github/workflows/check-commit-message.yml
@@ -4,6 +4,9 @@ on:
   pull_request:
     types: [ synchronize, opened ]
 
+permissions:
+  pull-requests: read
+
 jobs:
   check_commit_message:
     name: Check Commit Message
@@ -12,7 +15,7 @@ jobs:
     steps:
       - name: Check Commit Message
         id: commits
-        uses: actions/github-script@v7
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
         with:
           script: |
             const prNumber = context.payload.pull_request.number;
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ed9fb643..6d29b384 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,13 +4,16 @@ on:
   push:
    branches: [ "master" ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Set up JDK 25
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # v4.7.0
       with:
         java-version: '25'
         distribution: 'zulu'
diff --git a/.github/workflows/pull-request-build.yml b/.github/workflows/pull-request-build.yml
index 61168316..ce2cf02c 100644
--- a/.github/workflows/pull-request-build.yml
+++ b/.github/workflows/pull-request-build.yml
@@ -5,20 +5,23 @@ on:
     branches: [ master ]
     types: [opened, synchronize, reopened]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     name: Build and analyze
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Set up JDK 25
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # v4.7.0
       with:
         java-version: '25'
         distribution: 'zulu'
 
     - name: Cache Maven packages
-      uses: actions/cache@v3
+      uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
       with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
diff --git a/.github/workflows/sonar-scan.yml b/.github/workflows/sonar-scan.yml
index e924eeb3..03d91b79 100644
--- a/.github/workflows/sonar-scan.yml
+++ b/.github/workflows/sonar-scan.yml
@@ -6,13 +6,17 @@ on:
   pull_request:
    branches: [ "master" ]
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Set up JDK 25
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # v4.7.0
       with:
         java-version: '25'
         distribution: 'zulu'