diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb1dd74..47d5af3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,8 @@ jobs:
           - '1.3'
           - '1.6'
           - '1.7'
+          - '1.8'
+          - '1.9'
           - '1' # automatically expands to the latest stable 1.x release of Julia
           - 'nightly'
         os: