diff --git a/.gitea/workflows/nix.yml b/.gitea/workflows/nix.yml
index 3193db4..fa52c6f 100644
--- a/.gitea/workflows/nix.yml
+++ b/.gitea/workflows/nix.yml
@@ -22,6 +22,12 @@ jobs:
             system-features = nixos-test benchmark big-parallel kvm
           enable_kvm: true
 
+      - name: Cache Nix store
+        uses: nix-community/cache-nix-action@v5
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+
       - name: Run tests
         run: |
           nix --print-build-logs --experimental-features 'nix-command flakes' flake check --all-systems