diff --git a/parallel_test.sh b/parallel_test.sh
index cf3174b..de9c7b7 100755
--- a/parallel_test.sh
+++ b/parallel_test.sh
@@ -5,7 +5,7 @@ set -eu
 export DEBUG=superagent-sync,e2e:*
 export DEBUG_COLORS=true
 
-readonly tests=(app-flow-test cloudron-user-test new-user-test cloudron-backup-test)
+readonly tests=(app-flow-test cloudron-user-test new-user-test cloudron-backup-test custom-domain-test)
 test_pids=()
 test_logs=()