diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 676ede79..e498ba6c 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -30,8 +30,8 @@ jobs:
           - { os: windows-latest, r: "oldrel-1" }
 
           #- { os: ubuntu-latest, r: "devel" }
-          - { os: ubuntu-latest, r: "release" }
-          - { os: ubuntu-latest, r: "oldrel-1" }
+          #- { os: ubuntu-latest, r: "release" }
+          #- { os: ubuntu-latest, r: "oldrel-1" }
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}