diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index fcef706..33632bc 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -17,6 +17,8 @@ jobs:
       uses: actions/checkout@v3
     - name: "Install Nix"
       uses: cachix/install-nix-action@v18
+      with:
+        install_url: https://releases.nixos.org/nix/nix-2.13.3/install
     - name: "Set Up Binary Cache"
       if: github.event_name != 'pull_request'
       uses: cachix/cachix-action@v12