diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/GetFeatures.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/GetFeatures.java
index 94e986bb86..5bddcafddd 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/GetFeatures.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/GetFeatures.java
@@ -52,6 +52,7 @@ public class GetFeatures implements TestkitRequest
             "Temporary:FastFailingDiscovery",
             "Feature:TLS:1.1",
             "Feature:TLS:1.2",
+            "Feature:TLS:1.3",
             "Feature:API:SSLSchemes",
             "Feature:API:Liveness.Check",
             "Temporary:DriverMaxConnectionPoolSize",
diff --git a/testkit/backend.py b/testkit/backend.py
index abc57fe35a..2865d0b305 100644
--- a/testkit/backend.py
+++ b/testkit/backend.py
@@ -10,7 +10,7 @@
 
 if __name__ == "__main__":
     subprocess.check_call(
-        ["java", "-jar", "testkit-backend/target/testkit-backend.jar",
+        ["java", "-Djdk.tls.client.protocols=TLSv1.3,TLSv1.2,TLSv1.1", "-jar", "testkit-backend/target/testkit-backend.jar",
         os.getenv('TEST_BACKEND_SERVER', '')],
         stdout=sys.stdout, stderr=sys.stderr
     )