diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 9a8e967a5..09d37236a 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -28,14 +28,12 @@ jobs:
         config:
           - {os: macOS-latest,   r: 'release'}
 
-          - {os: windows-latest, r: 'next'}
           - {os: windows-latest, r: 'release'}
           # Use 3.6 to trigger usage of RTools35
           - {os: windows-latest, r: '3.6'}
           # use 4.1 to check with rtools40's older compiler
           - {os: windows-latest, r: '4.1'}
 
-          - {os: ubuntu-latest,  r: 'next'}
           - {os: ubuntu-latest,  r: 'devel', http-user-agent: 'release'}
           - {os: ubuntu-latest,  r: 'devel', http-user-agent: 'release', locale: 'en_US'}
           - {os: ubuntu-latest,  r: 'release', http-user-agent: 'release', locale: 'zh_CN'}