diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 146f393..3a39372 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -24,7 +24,7 @@ jobs:
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up magic Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
+        uses: DeterminateSystems/magic-nix-cache-action@6221693898146dc97e38ad0e013488a16477a4c4 # v9
 
       - name: Shell name
         id: shell
@@ -60,7 +60,7 @@ jobs:
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up magic Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
+        uses: DeterminateSystems/magic-nix-cache-action@6221693898146dc97e38ad0e013488a16477a4c4 # v9
 
       - name: Prepare Nix shell
         run: nix develop --impure .#ci
@@ -89,7 +89,7 @@ jobs:
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up magic Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
+        uses: DeterminateSystems/magic-nix-cache-action@6221693898146dc97e38ad0e013488a16477a4c4 # v9
 
       - name: Lint
         run: nix develop --impure .#ci -c golangci-lint run --out-format github-actions
@@ -109,7 +109,7 @@ jobs:
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up magic Nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
+        uses: DeterminateSystems/magic-nix-cache-action@6221693898146dc97e38ad0e013488a16477a4c4 # v9
 
       - name: Check
         run: nix flake check --impure