diff --git a/src/main/java/de/hftstuttgart/dta/Testrunner.java b/src/main/java/de/hftstuttgart/dta/Testrunner.java
index 16edd221911f95645ddbf93c294558c412a872a9..aff1c5735d5b331da8c9ccaa6c31a3723fe1d026 100644
--- a/src/main/java/de/hftstuttgart/dta/Testrunner.java
+++ b/src/main/java/de/hftstuttgart/dta/Testrunner.java
@@ -65,7 +65,7 @@ public class Testrunner
 
     public static void main(String[] args) throws Exception
     {
-        LOG.info("OpenJDK11 JUnit5/Jupiter Testrunner started");
+        LOG.info("OpenJDK21 JUnit5/Jupiter Testrunner started");
 
         LOG.info("initializing fields...");
         sourceFolders = args[0].split(":");
diff --git a/student.txt b/student.txt
deleted file mode 100644
index eb7c3fca0a28ded44110e72e2f3b7fc7dcf7e5cc..0000000000000000000000000000000000000000
--- a/student.txt
+++ /dev/null
@@ -1 +0,0 @@
-dtt::https://transfer.hft-stuttgart.de/gitlab/dtt/example_openjdk11-junit5-calculator-submission.git::none::none
\ No newline at end of file
diff --git a/teacher-dta.txt b/teacher-dta.txt
deleted file mode 100644
index 276c40ca98b5f7036c69b17a5a84ebffe77adca8..0000000000000000000000000000000000000000
--- a/teacher-dta.txt
+++ /dev/null
@@ -1 +0,0 @@
-dtt::https://transfer.hft-stuttgart.de/gitlab/dtt/example_openjdk11-junit5-calculator-test.git::none::none::hftstuttgart/dta-jdk17-junit5-testrunner:latest