diff --git a/.github/workflows/stale-issues-prs.yml b/.github/workflows/stale-issues-prs.yml
index ebef9af..1eb5255 100644
--- a/.github/workflows/stale-issues-prs.yml
+++ b/.github/workflows/stale-issues-prs.yml
@@ -14,7 +14,7 @@ jobs:
       pull-requests: write  # for actions/stale to close stale PRs
     if: startsWith(github.repository, 'microcks/')
     name: Mark issue or PR as stale
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - uses: actions/stale@4391f3da665fdf50b6810c1a66712fb9ba21aa93 # To pin v11.0.0
         with:
diff --git a/.github/workflows/welcome-new-users.yml b/.github/workflows/welcome-new-users.yml
index aadeb0c..1a1e6d2 100644
--- a/.github/workflows/welcome-new-users.yml
+++ b/.github/workflows/welcome-new-users.yml
@@ -19,7 +19,7 @@ permissions: {}
 jobs:
   welcome-issue:
     if: github.event_name == 'issues'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       issues: write
     steps:
@@ -47,7 +47,7 @@ jobs:
 
   welcome-pr-opened:
     if: github.event_name == 'pull_request_target' && github.event.action == 'opened'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       pull-requests: write
     steps:
@@ -65,7 +65,7 @@ jobs:
 
   welcome-pr-merged:
     if: github.event_name == 'pull_request_target' && github.event.action == 'closed' && github.event.pull_request.merged == true
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       pull-requests: write
     steps: