diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9cb51aa0f6..3945f19d5e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,14 @@
 name: CI
 
-on: [push]
+on:
+  pull_request:
+    branches:
+      - develop
+      - master
+  push:
+    branches:
+      - develop
+      - master
 
 env:
   MPI_DIR: /usr
diff --git a/README.md b/README.md
index 5a1a8d3d53..92ea1d8db3 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # OpenMC Monte Carlo Particle Transport Code
 
 [![License](https://img.shields.io/github/license/openmc-dev/openmc.svg)](http://openmc.readthedocs.io/en/latest/license.html)
-[![GitHub Actions build status (Linux)](https://github.com/pshriwise/openmc/workflows/CI/badge.svg?branch=develop)
+[![GitHub Actions build status (Linux)](https://github.com/pshriwise/openmc/workflows/CI/badge.svg?branch=develop)](https://github.com/openmc-dev/openmc/actions)
 [![Code Coverage](https://coveralls.io/repos/github/openmc-dev/openmc/badge.svg?branch=develop)](https://coveralls.io/github/openmc-dev/openmc?branch=develop)
 
 The OpenMC project aims to provide a fully-featured Monte Carlo particle