diff --git a/README.md b/README.md
index ecf539f..9a7533e 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ jobs:
       with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-    - uses: cachix/install-nix-action@v11
+    - uses: cachix/install-nix-action@v12
       with:
         install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-3.0pre20200820_4d77513/install
         extra_nix_config: |