diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 67b25964..120a0f0b 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -6,9 +6,11 @@ on:
   pull_request:
     branches:
       - "master"
+      - "*.x"
   push:
     branches:
       - "master"
+      - "*.x"
     tags:
       - "*"