diff --git a/polkadot/scripts/gitlab/test_linux_stable.sh b/polkadot/scripts/gitlab/test_linux_stable.sh
index 98ace6b542..17f5c80a72 100755
--- a/polkadot/scripts/gitlab/test_linux_stable.sh
+++ b/polkadot/scripts/gitlab/test_linux_stable.sh
@@ -4,3 +4,6 @@
 source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
 
 time cargo test --all --release --verbose --locked --features=runtime-benchmarks --features=real-overseer
+
+cd parachain/test-parachains/adder/collator/
+time cargo test --release --verbose --locked --features=real-overseer