diff --git a/requirements.txt b/requirements.txt
index d85ff9d..4a0bba6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -176,7 +176,7 @@ psutil==5.4.5
 py==1.5.3
 pyasn1==0.4.2
 pyasn1-modules==0.2.1
-pycares==2.3.0
+pycares==4.2.0
 pycparser==2.18
 pycrypto==2.6.1
 pylint==1.9.2
@@ -281,7 +281,7 @@ psutil==5.4.5
 py==1.5.3
 pyasn1==0.4.2
 pyasn1-modules==0.2.1
-pycares==2.3.0
+pycares==4.2.0
 pycparser==2.18
 pycrypto==2.6.1
 pylint==1.9.2