1 files changed, 1 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 1ec3a354..80df3098 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@ with open(os.path.join(src_dir, "cryptography", "__about__.py")) as f:
 VECTORS_DEPENDENCY = "cryptography_vectors=={0}".format(about['__version__'])
 
 requirements = [
-    "idna>=2.0",
+    "idna>=2.1",
     "asn1crypto>=0.21.0",
     "packaging",
     "six>=1.4.1",