diff --git a/.gitea/workflows/build-pi-img.yml b/.gitea/workflows/build-pi-img.yml
index 68cd32b..f498d79 100644
--- a/.gitea/workflows/build-pi-img.yml
+++ b/.gitea/workflows/build-pi-img.yml
@@ -14,7 +14,7 @@ jobs:
         with:
           ref: trunk
       - name: Install prerequisites
-        run: apt update && apt install -y sudo
+        run: apt update && apt install -y sudo zstd
       - name: Install Nix
         uses: https://github.com/cachix/install-nix-action@v22
         with: