diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8b44792..e93c2cf 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,7 +1,7 @@
 # Development dependencies (pinned for reproducible installs)
 pytest-cov==4.0.0
 pytest-subtests==0.15.0
-pytest-asyncio==0.25.3
+pytest-asyncio==1.3.0
 tiktoken==0.12.0
 fastmcp<3
 build