diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index ea47a2c..6257a72 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -15,7 +15,7 @@ jobs:
         version:
           - '1.6'
           - '1'
-          - 'nightly'
+          - 'pre'
         os:
           - ubuntu-latest
           - windows-latest