diff --git a/README.md b/README.md
index 7d48bd5..e494591 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,10 @@
 
 [2023/11/20] airllm Initial verion!
 
+## Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=lyogavin/airllm&type=Timeline)](https://star-history.com/#lyogavin/airllm&Timeline)
+
 ## Table of Contents
 
 * [Quick start](#quickstart)
diff --git a/air_llm/setup.py b/air_llm/setup.py
index 61d3aed..fcfead4 100644
--- a/air_llm/setup.py
+++ b/air_llm/setup.py
@@ -1,3 +1,4 @@
+import sys
 import setuptools
 from setuptools.command.install import install
 import subprocess
@@ -6,7 +7,10 @@ import subprocess
 class PostInstallCommand(install):
     def run(self):
         install.run(self)
-        subprocess.check_call(["pip", "install", "--upgrade", "transformers"])
+        try:
+            subprocess.check_call([sys.executable, "-m", "pip", "install", "--upgrade", "transformers"])
+        except subprocess.CalledProcessError:
+            print("Warning: Unable to upgrade transformers package. Please upgrade manually.")
 
 # Windows uses a different default encoding (use a consistent encoding)
 with open("README.md", "r", encoding="utf-8") as fh: