diff --git a/.github/workflows/unit_tests_on_ray_matrix.yml b/.github/workflows/unit_tests_on_ray_matrix.yml
index 0800497..c0dd850 100644
--- a/.github/workflows/unit_tests_on_ray_matrix.yml
+++ b/.github/workflows/unit_tests_on_ray_matrix.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        ray_version: [2.0.0, 2.1.0, 2.2.0, 2.3.0, 2.4.0, 2.5.1, 2.6.3, 2.7.1, 2.8.1]
+        ray_version: [2.4.0, 2.5.1, 2.6.3, 2.7.1, 2.8.1, 2.9.0]
 
     timeout-minutes: 60
     runs-on: ubuntu-latest