diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index e298a2a..b762ca4 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -26,7 +26,7 @@ jobs:
           - {os: ubuntu-latest,  r: 'release'  }
           - {os: ubuntu-latest,  r: 'oldrel'   }
           - {os: ubuntu-latest,  r: 'oldrel-1' }
-          - {os: ubuntu-latest,  r: '3.4'      }
+          - {os: ubuntu-latest,  r: '3.5'      }
           - {os: ubuntu-latest,  r: 'release'  , language: ko,    label: ko    }
 #          - {os: ubuntu-latest,  r: 'release'  , language: zh_CN, label: zh_CN }
 #          - {os: ubuntu-latest,  r: 'release'  , language: zh_TW, label: zh_TW }