diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index fe32cd23..7fd1a319 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -11,7 +11,7 @@ jobs:
         os: [ubuntu, macos]
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v31
       #- uses: cachix/cachix-action@v15
         #with:
           #name: sofa