diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7efcd05b..f3a567e1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,13 +1,20 @@
 name: CI
 
 on:
-  workflow_dispatch:
-  pull_request:
   push:
+    branches:
+      - main
+      - master
+  
+  pull_request:
+    types: [opened, synchronize, reopened, labeled]
 
 jobs:
   build-and-test:
     name: Run on ${{ matrix.os }} with SOFA ${{ matrix.sofa_branch }}
+    if: >
+      github.event_name == 'push' ||
+      contains(github.event.pull_request.labels.*.name, 'pr: run ci')
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false