diff --git a/.github/workflows/run_mypy.yaml b/.github/workflows/run_mypy.yaml
index 2ca1df6..1f955bd 100644
--- a/.github/workflows/run_mypy.yaml
+++ b/.github/workflows/run_mypy.yaml
@@ -5,7 +5,7 @@ on: [pull_request, push]
 jobs:
   run_mypy:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
     - uses: actions/checkout@v1
diff --git a/.github/workflows/run_pycodestyle.yaml b/.github/workflows/run_pycodestyle.yaml
index 185c86a..9843681 100644
--- a/.github/workflows/run_pycodestyle.yaml
+++ b/.github/workflows/run_pycodestyle.yaml
@@ -5,7 +5,7 @@ on: [pull_request, push]
 jobs:
   run_pycodestyle:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
     - uses: actions/checkout@v1