diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 2acdf34..d25d58d 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -59,11 +59,13 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # 7.0.1
 
-    # Add any setup steps before running the `github/codeql-action/init` action.
-    # This includes steps like installing compilers or runtimes (`actions/setup-node`
-    # or others). This is typically only required for manual builds.
-    # - name: Setup runtime (example)
-    #   uses: actions/setup-example@v1
+    - name: Configure Java toolchain
+      if: matrix.language == 'java-kotlin'
+      # Map the GitHub runner's JDK variable to the name expected in gradle.properties.
+      run: |
+        if [ -d "${JAVA_HOME_17_X64:-}" ]; then
+          echo "JAVA_17_HOME=$JAVA_HOME_17_X64" >> "$GITHUB_ENV"
+        fi
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL