diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index cd6fc923..8a6e171f 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -30,8 +30,9 @@ jobs:
         arguments: assemble
 
     - name: Upload a Build Artifact
-      uses: actions/upload-artifact@v3.1.3
+      uses: actions/upload-artifact@v4
       with:
          name: ZoteCoreLoader
          path: build/libs/ZoteCoreLoader-SNAPSHOT.jar
+         compression-level: 9
          retention-days: 30