diff --git a/pyproject.toml b/pyproject.toml
index 29053e1..0402e67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ doc = [
     "sphinx-favicon",
 ]
 benchmark = [
-    "asv",
+    "asv<=0.6.1",
 ]
 
 [project.urls]