diff --git a/requirements-dev.txt b/requirements-dev.txt
index e3c2209..3739aee 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,7 +8,7 @@ cffi==1.12.3
 chardet==3.0.4
 idna==2.8
 multidict==4.5.2
-pycares==3.0.0
+pycares==4.2.0
 pycparser==2.19
 python-dateutil==2.8.0
 pytz==2019.3