diff --git a/.github/actions/setup-tests/action.yml b/.github/actions/setup-tests/action.yml
index 072b4b9..2d04a01 100644
--- a/.github/actions/setup-tests/action.yml
+++ b/.github/actions/setup-tests/action.yml
@@ -9,7 +9,7 @@ runs:
         git config --global user.name "GitHub Actions Bot"
         git config --global user.email "<>"
     - name: Install Nix
-      uses: DeterminateSystems/nix-installer-action@07b8bcba1b22d847db7ee507180c33e115499665 # v8
+      uses: DeterminateSystems/nix-installer-action@cd46bde16ab981b0a7b2dce0574509104543276e # v9
     - uses: DeterminateSystems/magic-nix-cache-action@8a218f9e264e9c3803c9a1ee1c30d8e4ab55be63 # v2
     - name: Check Nixpkgs inputs
       uses: DeterminateSystems/flake-checker-action@4b90f9fc724969ff153fe1803460917c84fe00a3 # v5