diff --git a/.github/workflows/diagnose.yml b/.github/workflows/diagnose.yml
index 07544e2..04c8d95 100644
--- a/.github/workflows/diagnose.yml
+++ b/.github/workflows/diagnose.yml
@@ -46,9 +46,10 @@ jobs:
 
           install -d -m 700 "$RUNNER_TEMP/ssh"
           SSH_KEY_FILE="$RUNNER_TEMP/ssh/google_compute_engine"
-          gcloud secrets versions access latest \
+          ssh_private_key="$(gcloud secrets versions access latest \
             --project "${GCP_PROJECT_ID}" \
-            --secret "${SSH_PRIVATE_KEY_SECRET_NAME}" | tr -d '\r' > "$SSH_KEY_FILE"
+            --secret "${SSH_PRIVATE_KEY_SECRET_NAME}")"
+          printf '%s\n' "$ssh_private_key" | tr -d '\r' > "$SSH_KEY_FILE"
           chmod 600 "$SSH_KEY_FILE"
           ssh-keygen -y -f "$SSH_KEY_FILE" > "$SSH_KEY_FILE.pub"
           chmod 644 "$SSH_KEY_FILE.pub"