diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 52c32b2..f0aeac2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,8 +30,7 @@ jobs:
 
     strategy:
       matrix:
-        release: [R2021b]
-        release: [R2023b]
+        release: [R2021b, R2023b]
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: