diff --git a/.github/workflows/github_pages.yml b/.github/workflows/github_pages.yml
index 5baf396a..fc72510d 100644
--- a/.github/workflows/github_pages.yml
+++ b/.github/workflows/github_pages.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
-    - uses: cachix/install-nix-action@v10
+    - uses: cachix/install-nix-action@v12
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - uses: cachix/cachix-action@v6
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 99a17700..897273ad 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
-    - uses: cachix/install-nix-action@v11
+    - uses: cachix/install-nix-action@v12
       with:
         nix_path: nixpkgs=channel:nixos-20.09
     - uses: cachix/cachix-action@v6