diff --git a/requirements.txt b/requirements.txt
index e18871a..4252064 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ click==7.1.1
 Cython==0.29.16
 decorator==4.4.2
 freetype-py==2.1.0.post1
-idna==2.9
+idna==3.7
 mpmath==1.1.0
 networkx==2.4
 numpy==1.22.0