diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 635a2d9..3089c80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,11 +4,11 @@ on:
   push:
     branches:
       - master
-      - 2.3-maintenance
+      - '*.x'
   pull_request:
     branches:
       - master
-      - 2.3-maintenance
+      - '*.x'
 
 jobs:
   setup:
@@ -30,7 +30,7 @@ jobs:
             echo "unsupported event: $GITHUB_EVENT_NAME"
             exit 1
           fi
-          if [[ $upstream_branch != master && $upstream_branch != *-maintenance && $upstream_branch != search ]]; then
+          if [[ $upstream_branch != master && $upstream_branch != *.x ]]; then
             echo "assuming there is no branch named ${upstream_branch} in indico; defaulting to master"
             upstream_branch=master
           else
@@ -120,7 +120,7 @@ jobs:
             echo "unsupported event: $GITHUB_EVENT_NAME"
             exit 1
           fi
-          if [[ $upstream_branch != master && $upstream_branch != *-maintenance ]]; then
+          if [[ $upstream_branch != master && $upstream_branch != *.x ]]; then
             echo "assuming there is no branch named ${upstream_branch} in indico; defaulting to master"
             upstream_branch=master
           else