diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 1f2703f..df0fcbf 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -128,6 +128,7 @@ jobs:
                 paste0("PATH=", Sys.getenv("PATH"), ":", hadoop_bin_path)
               ),
               file = Sys.getenv("GITHUB_ENV"),
+              sep = "\n",
               append = TRUE
             )
           }