diff --git a/setup.py b/setup.py
index 1f99e39d..6f79f6b1 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ def get_cuda_version():
             "opencv-python",
         ],
         extras_require={
-            "[flash_attn]": [
+            "flash_attn": [
                 "flash_attn>=2.6.3",
             ],
         },