diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index de04a9e..5e5c5b3 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -22,7 +22,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v10
 
       - name: Setup Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@v4
+        uses: DeterminateSystems/magic-nix-cache-action@v6
 
       - name: Build Docker image
         id: build
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 44b1203..6f6e6ca 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -23,7 +23,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v10
 
       - name: Setup Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@v4
+        uses: DeterminateSystems/magic-nix-cache-action@v6
 
       - name: Build refraction
         run: nix build --fallback --print-build-logs
@@ -45,7 +45,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v10
 
       - name: Setup Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@v4
+        uses: DeterminateSystems/magic-nix-cache-action@v6
 
       - name: Run checks
         run: |