diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc6a07a..48ffede 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -230,10 +230,10 @@ jobs:
           - key: revision
             value: 7011c077ec491da410fbc39f68676b0908b9ce7e
             nix-version: "2.19.2"
-          # https://github.com/DeterminateSystems/nix-installer/tree/nix-installer-action-test
+          # https://github.com/DeterminateSystems/nix-installer/tree/replace-profile-scripts
           - key: branch
-            value: nix-installer-action-test
-            nix-version: "2.21.2"
+            value: replace-profile-scripts
+            nix-version: "2.18.1"
           # https://github.com/DeterminateSystems/nix-installer/tree/v0.14.0
           - key: tag
             value: v0.14.0