diff --git a/requirements.txt b/requirements.txt
index 193512a..7724e01 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ deprecation==1.0.1        # via nicfit.py
 idna==2.6                 # via cryptography
 lxml==4.1.1
 nicfit.py==0.6.6
-pycares==2.3.0            # via aiodns
+pycares==4.2.0            # via aiodns
 pycparser==2.18           # via cffi
 pyopenssl==17.5.0
 six==1.11.0               # via cryptography, pyopenssl