diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index df80876..2aa9b52
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,6 @@ cffi==1.14.0
 chardet==3.0.4
 idna==2.7
 multidict==4.7.6
-pycares==3.1.1
+pycares==4.2.0
 pycparser==2.20
 yarl==1.4.2