diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 534f1ca..f6f31a9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,5 +8,9 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: cachix/install-nix-action@v7
+    - name: Prevent garbage collections of gcroots
+      run:
+        printf "keep-outputs = true\nkeep-derivations = true\n" | sudo tee -a /etc/nix/nix.conf;
+        sudo systemctl restart nix-daemon
     - run:
         nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixpkgs-unstable.tar.gz ci.nix --run 'true'