diff --git a/requirements.txt b/requirements.txt
index 71db4f3..b712440 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,5 +17,5 @@ sniffio==1.3.1 ; python_version >= "3.9" and python_version < "4.0"
 sortedcontainers==2.4.0 ; python_version >= "3.9" and python_version < "4.0"
 trio-asyncio==0.15.0 ; python_version >= "3.9" and python_version < "4.0"
 trio-serial==0.4.0 ; python_version >= "3.9" and python_version < "4.0"
-trio==0.25.1 ; python_version >= "3.9" and python_version < "4.0"
+trio==0.28.0 ; python_version >= "3.9" and python_version < "4.0"
 tzdata==2024.1 ; python_version >= "3.9" and python_version < "4.0"