diff --git a/pyproject.toml b/pyproject.toml
index badc6d0..1b53e06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ package-mode = false
 [tool.poetry.dependencies]
 python = "^3.12"
 setuptools = "^82.0.1"
-idna = "^3.0"
+idna = "^3.18"
 certifi = "^2026.1.4"
 bump2version = "^1.0.1"
 python-dotenv = "^1.0.0"