diff --git a/release.py b/release.py
index b2c02fb..b4f25e7 100644
--- a/release.py
+++ b/release.py
@@ -82,8 +82,8 @@ def main():
         _copytree(os.path.join(top_dir, dir),
                   os.path.join(target_dir, dir))
     
-    shutil.copy2(os.path.join(top_dir, "README.txt"),
-                 os.path.join(target_dir, "README.txt"))
+    shutil.copy2(os.path.join(top_dir, "README.md"),
+                 os.path.join(target_dir, "README.md"))
 
     target_lib_dir = os.path.join(target_dir, "lib")
     _copytree(site_pacakge_dir, target_lib_dir)