diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 162a556..7a2ca0f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,6 +18,9 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - '1.7'
+          - '1.8'
+          - '1.9'
           - '1.10'
           - 'nightly'
         os: