diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4e9228d..f8fb93b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,7 +2,11 @@ name: gcc
 
 on:
   push:
+    branches:
+      - main
   pull_request:
+    branches:
+      - main
   workflow_dispatch:
   schedule:
     - cron:  '0 9 * * *' # 9:00am UTC, 1:00am PST.
@@ -14,6 +18,11 @@ env:
   UBUNTU_NAME: focal
   UBUNTU_VERSION: 20.04
 
+# Cancel previously running PR jobs
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   compile_and_test:
     name: Compile and test
diff --git a/.github/workflows/maliput_full.yml b/.github/workflows/maliput_full.yml
index 597c10e..84caac8 100644
--- a/.github/workflows/maliput_full.yml
+++ b/.github/workflows/maliput_full.yml
@@ -2,6 +2,8 @@ name: maliput_full_build
 
 on:
   push:
+    branches:
+      - main
   pull_request:
     branches:
       - main
@@ -13,6 +15,11 @@ env:
   PACKAGE_NAME: maliput_full
   ROS_DISTRO: foxy
 
+# Cancel previously running PR jobs
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   compile_and_test:
     name: Build