diff --git a/pyproject.toml b/pyproject.toml
index 1d20c21..837f60a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
 license = { file = "LICENSE" }
 
 dependencies = [
-    "anyio==4.0.0",
+    "anyio==4.3.0",
     "certifi==2023.11.17",
     "h11==0.14.0",
     "h2==4.1.0",