diff --git a/requirements.txt b/requirements.txt
index a356194..2feae10 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ multidict==4.4.0
 nltk==3.3
 numpy==1.15.1
 passlib==1.7.1
-pycares==2.3.0
+pycares==4.2.0
 pycparser==2.18
 PyJWT==1.6.4
 pymongo==3.7.1