diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 306ec14..85dcb0c 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,6 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - '1.6'
           - '1.1'
           - '1'
 #          - 'nightly'