diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 588f0bc..7d1eaa2 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -14,13 +14,31 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up JDK 17
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
         java-version: 17
-    - name: Build with Maven
+        distribution: 'temurin'
+        cache: 'maven'
+        gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
+        gpg-passphrase: MAVEN_GPG_PASSPHRASE
+      if: ${{ secrets.GPG_PRIVATE_KEY != '' }}
+    - name: Set up JDK 17 (without GPG)
+      uses: actions/setup-java@v3
+      with:
+        java-version: 17
+        distribution: 'temurin'
+        cache: 'maven'
+      if: ${{ secrets.GPG_PRIVATE_KEY == '' }}
+    - name: Build with Maven (with GPG)
+      env:
+        MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
       run: mvn clean install
+      if: ${{ secrets.GPG_PRIVATE_KEY != '' }}
+    - name: Build with Maven (skip GPG)
+      run: mvn clean install -Dgpg.skip=true
+      if: ${{ secrets.GPG_PRIVATE_KEY == '' }}
       
     - name: Archive production artifacts
       uses: actions/upload-artifact@v4