diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f43043c..d26bf32 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,16 +1,16 @@
 name: CI
 
 on:
+  pull_request:
   push:
     branches:
-      - 'master'
-  pull_request:
+      - master
   workflow_dispatch:
 
 jobs:
   validation:
     name: Validation
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
@@ -36,7 +36,7 @@ jobs:
 
   lowest:
     name: Prefer Lowest
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2