diff --git a/requirements.txt b/requirements.txt
index 37f2d99..ad15586 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ mechanicalsoup==0.12.0
 selenium==3.14.1
 getrails==3.3
 objetive==0.6
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability