diff --git a/.github/workflows/nix-build.yml b/.github/workflows/nix-build.yml
index 9dbf2bd..fc195f9 100644
--- a/.github/workflows/nix-build.yml
+++ b/.github/workflows/nix-build.yml
@@ -8,7 +8,7 @@ jobs:
     name: Nix checks
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v21
     - uses: cachix/cachix-action@v12
       with:
         name: neorocks
@@ -28,7 +28,7 @@ jobs:
           - .#devShells.x86_64-linux.default
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v21
     - uses: cachix/cachix-action@v12
       with:
         name: neorocks
@@ -41,7 +41,7 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v21
       - uses: cachix/cachix-action@v12
         with:
           name: neorocks