diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 114feb3..be82822 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         version:
           - '1.6'
-          - 'nightly'
+          - 'pre'
         os:
           - ubuntu-latest
           - macOS-latest