diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9ce6e28..b6f0074 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.ref }}
 
-      - uses: DeterminateSystems/flake-checker-action@v8
+      - uses: DeterminateSystems/flake-checker-action@v9
 
       - uses: DeterminateSystems/nix-installer-action@main
       - uses: DeterminateSystems/magic-nix-cache-action@main