diff --git a/requirements.txt b/requirements.txt
index b126a6c..8e3b936 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ charset-normalizer==2.0.12
     # via requests
 future==0.18.3
     # via cytomine-python-client (setup.py)
-idna==3.2
+idna==3.7
     # via requests
 msgpack==1.0.2
     # via cachecontrol