diff --git a/.github/workflows/build-gradle-project.yml b/.github/workflows/build-gradle-project.yml
index 35800a0..de8f3d6 100644
--- a/.github/workflows/build-gradle-project.yml
+++ b/.github/workflows/build-gradle-project.yml
@@ -15,9 +15,12 @@ jobs:
     - name: Checkout project sources
       uses: actions/checkout@v3
 
-    - name: Install packages
+    - name: Install Graphviz to visualize trees
       run: sudo apt-get install -y graphviz
 
+    - name: Install Java to have KeyTool
+      run: sudo apt-get install -y java-11-amazon-corretto-jdk
+
     - name: Setup Gradle
       uses: actions/setup-java@v3
       with: