diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c9b8119..c18ebd3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,4 +1,4 @@
-name: Build AVR on Ubuntu
+name: Build AVR on Ubuntu 20.04
 
 # Controls when the workflow will run
 on: [push, pull_request, workflow_dispatch]
@@ -8,7 +8,7 @@ jobs:
   # This workflow contains a single job called "build"
   build:
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 376fe16..8571df4 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: avr (single test)
+name: AVR (single test)
 on: 
   workflow_dispatch:
     inputs:
@@ -24,7 +24,7 @@ on:
 
 jobs:
   job1:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python 3.7