diff --git a/requirements.txt b/requirements.txt
index 279d521..47c7d63 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ idna==2.7
 oauth2client==4.1.2
 pyasn1==0.4.4
 pyasn1-modules==0.2.2
-requests==2.19.1
+requests==2.21.0
 rsa==3.4.2
 six==1.11.0
 urllib3==1.23