diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index 8d6c9c08..a3d5dcc7 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10"]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4068c068..617dec86 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 -   Incorrect category_id input for test_category
 -   Assertion value for test_categories_limit_low and test_categories_limit_high
+-   Pin Github Actions Runner to Ubuntu 20 for Py27
 
 ## [2.21.0] - 2022-09-26