diff --git a/docker-compose.yaml b/docker-compose.yaml
index a4c8336d60d52bd0084920af8c860d2de8931bd0..51a0ba09572c4b5749eddab3ad83b633568cfa6a 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -32,8 +32,8 @@ services:
     depends_on:
       - mariadb-dtt
   backend:
-    container_name: backendcomposedtt
-    image: hftstuttgart/dta-backend:latest
+    container_name: backend
+    image: cota-backend:latest
     user: "${UID}:${GID}"
     volumes: 
       - /var/run/docker.sock:/var/run/docker.sock
diff --git a/teacher-dta-dir-test-runner-jdk21.txt b/teacher-dta-dir-test-runner-jdk21.txt
index c04b7cc9cb022c37f28bb08bdbc2af4b67e3ae4a..04f36d99fc332f2743ca9dced2dd7679ca5bde4b 100644
--- a/teacher-dta-dir-test-runner-jdk21.txt
+++ b/teacher-dta-dir-test-runner-jdk21.txt
@@ -1 +1 @@
-dta::https://transfer.hft-stuttgart.de/gitlab/dtt/example_openjdk11-junit5-calculator-test.git::none::none::/::dta-jdk21-junit5-testrunner:nov05
+dta::git@transfer.hft-stuttgart.de:cota/examples/cota-test-course-jdk.git::none::none::/topic01/exercise01::cota-runner-jdk21-junit5:latest