diff --git a/.forgejo/workflows/test.yml b/.forgejo/workflows/test.yml
index da25a67..0ce7564 100644
--- a/.forgejo/workflows/test.yml
+++ b/.forgejo/workflows/test.yml
@@ -76,5 +76,7 @@ jobs:
       - name: setup rust toolchain
         uses: msrd0/rust-toolchain@nightly
       - name: test instruction decoding
-        run:  cargo test util # this is instruction decoding code
+        run:  cargo test util
+      - name: test garbage collection
+        run:  cargo test heap