diff --git a/requirements.txt b/requirements.txt
index becfa18..687a757 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ chardet==3.0.4
 idna==2.8
 idna-ssl==1.1.0
 multidict==4.7.3
-pycares==3.1.1
+pycares==4.2.0
 pycparser==2.19
 typing==3.7.4.1
 typing-extensions==3.7.4.1