diff --git a/pyproject.toml b/pyproject.toml
index c5c14b7..7c395c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
     "pytest-cov>=7.1.0",
     "twine>=7.0.0,<8",
     "black>=26.5.1,<27",
-    "idna>=3.19"
+    "idna>=3.20"
 ]
 classifiers = [
     "Programming Language :: Python :: 3",