diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index cf4518f9c2..c1f4d3710b 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -46,7 +46,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: true
-    - uses: cachix/install-nix-action@v14.1
+    - uses: cachix/install-nix-action@v15
       with:
         install_url: https://nixos-nix-install-tests.cachix.org/serve/i6laym9jw3wg9mw6ncyrk6gjx4l34vvx/install
         install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
@@ -81,7 +81,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: true
-    - uses: cachix/install-nix-action@v14.1
+    - uses: cachix/install-nix-action@v15
       with:
         install_url: https://nixos-nix-install-tests.cachix.org/serve/i6laym9jw3wg9mw6ncyrk6gjx4l34vvx/install
         install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'