diff --git a/.github/workflows/r.yml b/.github/workflows/r.yml
index bcdfc60..dd519f0 100644
--- a/.github/workflows/r.yml
+++ b/.github/workflows/r.yml
@@ -22,7 +22,7 @@ jobs:
         config:
           - {os: macos-latest,   r: 'release'}
           - {os: windows-latest, r: 'release'}
-          - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
+          #- {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
           - {os: ubuntu-latest,   r: 'release'}
           - {os: ubuntu-latest,   r: 'oldrel-1'}