diff --git a/.github/workflows/build-pro.yml b/.github/workflows/build-pro.yml
index 767b42fe9..fc0236969 100644
--- a/.github/workflows/build-pro.yml
+++ b/.github/workflows/build-pro.yml
@@ -50,7 +50,7 @@ jobs:
         env:
           PRODUCTION: 0
         run: |
-          sh <(curl -L https://nixos.org/nix/install) --no-daemon
+          sh <(curl -L https://releases.nixos.org/nix/nix-2.23.3/install) --no-daemon
           . $HOME/.nix-profile/etc/profile.d/nix.sh
           nix-shell --run "poetry install"
           git submodule update --init --recursive