diff --git a/requirements.txt b/requirements.txt
index c2d7075e..9476fedb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ Deprecated==1.2.10
 entrypoints==0.3
 future==0.18.2
 h5py==3.7.0
-idna==2.9
+idna==3.7
 ipython-genutils==0.2.0
 ipywidgets==7.5.1
 jedi==0.17.0