diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 054444b..0fd7a9a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -24,8 +24,6 @@ jobs:
       matrix:
         version:
           - '1.10'
-          - '1.6'
-          - 'nightly'
         os:
           - ubuntu-latest
         arch: