diff --git a/pyproject.toml b/pyproject.toml
index 0d1c04b..e56dc65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "uuid7 == 0.1.0",
     "urllib3 >= 2.6.3",  # security floor: urllib3 redirect/retry CVEs fixed in 2.5.0
     "zipp == 3.20.2",
-    "idna == 3.10",
+    "idna == 3.18",
     "asgiref == 3.8.1",
     "certifi == 2025.1.31",
     "charset-normalizer == 3.4.1",