diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc40e6e2..ee93940c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,6 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
     container: integralsw/osa-python:auto-latest
     
     steps:
diff --git a/.github/workflows/enforce-labels.yml b/.github/workflows/enforce-labels.yml
index 40977541..a90aa61a 100644
--- a/.github/workflows/enforce-labels.yml
+++ b/.github/workflows/enforce-labels.yml
@@ -5,7 +5,6 @@ on:
     types: [labeled, unlabeled, opened, edited, synchronize]
 jobs:
   enforce-label:
-    runs-on: ubuntu-latest
     steps:
     - uses: yogevbd/enforce-label-action@2.1.0
       with:
diff --git a/.github/workflows/prose.yml b/.github/workflows/prose.yml
index a8607c8d..c4123999 100644
--- a/.github/workflows/prose.yml
+++ b/.github/workflows/prose.yml
@@ -4,7 +4,6 @@ on: [push, pull_request]
 jobs:
   prose:
     name: runner / vale
-    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: errata-ai/vale-action@reviewdog
diff --git a/.github/workflows/python-package-live.yml b/.github/workflows/python-package-live.yml
index 91504dd0..fdaae280 100644
--- a/.github/workflows/python-package-live.yml
+++ b/.github/workflows/python-package-live.yml
@@ -19,7 +19,6 @@ jobs:
   build:
     if: contains( github.event.pull_request.labels.*.name, 'test-live')
 
-    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ['3.9', '3.10']
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 05b6d7ab..8c86bc7e 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -11,7 +11,6 @@ jobs:
   bump-version:
     name: Bump package version
     if: "!contains(github.event.head_commit.message, 'Bump version')"
-    runs-on: ubuntu-20.04
 
     permissions:
       # Give the default GITHUB_TOKEN write permission to commit and push the