diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index a321d8b7..1cde7a24 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -5,8 +5,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
-    - uses: cachix/install-nix-action@v6
-    - uses: cachix/cachix-action@v3
+    - uses: cachix/install-nix-action@v7
+    - uses: cachix/cachix-action@v4
       with:
         name: 47deg
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'