diff --git a/.github/workflows/flake_ci.yml b/.github/workflows/flake_ci.yml
index 577d4e4..ecfe4b8 100644
--- a/.github/workflows/flake_ci.yml
+++ b/.github/workflows/flake_ci.yml
@@ -15,7 +15,7 @@ jobs:
     - name: Install Nix
       uses: DeterminateSystems/nix-installer-action@v9
     - name: Run the Magic Nix Cache
-      uses: DeterminateSystems/magic-nix-cache-action@v2
+      uses: DeterminateSystems/magic-nix-cache-action@v4
 
     - name: Build the default flake output
       run: nix build