diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 893c5f0..4fc8849 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         php: [8.1]
-        branch: [REL1_39, REL1_40, REL1_41, REL1_42]
+        branch: [REL1_39, REL1_40, REL1_41, REL1_42, REL1_43]
 
     env:
       branch: ${{ matrix.branch }}