diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index dcf4fff..033d311 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -21,7 +21,6 @@ jobs:
       matrix:
         version:
           - '1.6'
-          - '1.9'
           - '1'
         os:
           - ubuntu-latest