diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 599faea..2adfdd1 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -152,7 +152,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install nix
-        uses: cachix/install-nix-action@0b0e072294b088b73964f1d72dfdac0951439dbd # v31.8.4
+        uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31.9.0
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: Install dependencies