diff --git a/.github/workflows/cachix.yaml b/.github/workflows/cachix.yaml
index 7c5f16d..6563e90 100644
--- a/.github/workflows/cachix.yaml
+++ b/.github/workflows/cachix.yaml
@@ -13,7 +13,7 @@ jobs:
     name: Format check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: cachix/install-nix-action@v23
 
@@ -24,7 +24,7 @@ jobs:
     name: Flake check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: cachix/install-nix-action@v23
 
@@ -53,7 +53,7 @@ jobs:
         - spot
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: cachix/install-nix-action@v23
 
@@ -81,7 +81,7 @@ jobs:
         - poseidon
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: cachix/install-nix-action@v23