diff --git a/requirements.txt b/requirements.txt
index cdb7b49f5..b89cde996 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ binaryornot==0.4.4
 
 # Code quality
 # ------------------------------------------------------------------------------
-flake8==3.5.0
+flake8==3.6.0
 
 # Testing
 # ------------------------------------------------------------------------------