diff --git a/src/install-sh-version.test.ts b/src/install-sh-version.test.ts
index 9f8a4d180e9..18785433aac 100644
--- a/src/install-sh-version.test.ts
+++ b/src/install-sh-version.test.ts
@@ -38,7 +38,7 @@ function resolveInstallerVersionCases(params: {
     "bash",
     [
       "-c",
-      `source "${installerPath}" >/dev/null 2>&1
+      `${versionHelperSource}
 for openclaw_bin in "\${@:3}"; do
   OPENCLAW_BIN="$openclaw_bin"
   resolve_openclaw_version