diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 1888cee..e4a2910 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -19,7 +19,6 @@ jobs:
       matrix:
         version:
           - '1.8'
-          - '1.9'
           - '1.10'
           - 'nightly'
         os: