diff --git a/.github/workflows/main-05-R-CMD-check-linux.yml b/.github/workflows/main-05-R-CMD-check-linux.yml
index 64982c59..44790b7c 100644
--- a/.github/workflows/main-05-R-CMD-check-linux.yml
+++ b/.github/workflows/main-05-R-CMD-check-linux.yml
@@ -22,7 +22,7 @@ jobs:
       max-parallel: 1
       matrix:
         config:
-          - {os: ubuntu-18.04, r: 'release'}
+          - {os: ubuntu-latest, r: 'release'}
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true