diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dc877a51..a059385e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,11 +17,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 13
-        uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - name: Set up JDK 23
+        uses: actions/setup-java@v4
         with:
-          java-version: '13'
+          java-version: '23'
           distribution: 'adopt'
           cache: maven
       - name: Build with Maven
@@ -29,42 +29,20 @@ jobs:
   
   test:
     runs-on: ubuntu-latest
-    needs: build
-    
-    services:
-      blazegraph: 
-        image: nawer/blazegraph:2.1.5
-        ports: 
-          - 9999:9999
-    
+    needs: build    
     steps: 
-      - uses: actions/checkout@v2
-      - name: Set up JDK 13
-        uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - name: Set up JDK 23
+        uses: actions/setup-java@v4
         with:
-          java-version: '13'
+          java-version: '23'
           distribution: 'adopt'
           cache: maven
-      - name: wait for blazegraph
-        uses: nev7n/wait_for_response@v1
-        with:
-          url: 'http://localhost:9999/blazegraph/namespace/kb/sparql'
-          responseCode: 200
-          timeout: 20000
-          interval: 500
       - name: package engine and launch
         run: |
           mvn package 
           cd engine/target
-          mv endpoints/endpoint-blazegraph.jpar endpoint.jpar
-          echo launching engine with this configuration
-          echo SPARQL ENDPOINT
-          cat endpoint.jpar
-          echo ENGINE PROPERTIES
-          cat engine.jpar
-          echo LOG4J
-          cat log4j2-debug.xml
-          java -Dlog4j.configurationFile=./log4j2-debug.xml -jar engine-v0.15.0.jar -engine engine.jpar -endpoint endpoint.jpar > log.txt &
+          java -Dlog4j.configurationFile=./log4j2-debug.xml -jar engine-1.0.0-SNAPSHOT.jar > log.txt &
         shell: bash
       - name: wait for SEPA engine
         uses: nev7n/wait_for_response@v1
@@ -76,7 +54,7 @@ jobs:
       - name: verify
         run: mvn verify -e -Dlog4j2.level=trace
       - name: publish Engine log
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: engine-log
@@ -92,10 +70,10 @@ jobs:
       contents: read
       packages: write 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
-          java-version: '13'
+          java-version: '23'
           distribution: 'adopt'
           cache: maven
       - name: Publish package
@@ -110,16 +88,16 @@ jobs:
       - build
       - test
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v4
       - name: Login to DockerHub
-        uses: docker/login-action@v2
+        uses: docker/login-action@v4
         with:
           username: ${{secrets.DOCKERHUB_USERNAME}}
           password: ${{secrets.DOCKERHUB_TOKEN}}
       - name: Build and push
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           push: true
           tags: vaimee/sepa:${{github.ref_name}},vaimee/sepa:latest