diff --git a/.github/workflows/repo_health.yml b/.github/workflows/repo_health.yml
index dc92e0e..902d234 100644
--- a/.github/workflows/repo_health.yml
+++ b/.github/workflows/repo_health.yml
@@ -214,10 +214,7 @@ jobs:
           echo "### SFTP connectivity test" >> "${GITHUB_STEP_SUMMARY}"
           echo "Attempting non-destructive SFTP session (pwd only)." >> "${GITHUB_STEP_SUMMARY}"
 
-          sftp -oBatchMode=yes -oStrictHostKeyChecking=no -P "${port}" -i "${key_file}" "${FTP_USER}@${FTP_HOST}" <<'EOF'
-          pwd
-          bye
-          EOF
+          printf 'pwd\nbye\n' | sftp -oBatchMode=yes -oStrictHostKeyChecking=no -P "${port}" -i "${key_file}" "${FTP_USER}@${FTP_HOST}"
 
           echo "SFTP connectivity check passed." >> "${GITHUB_STEP_SUMMARY}"