diff --git a/requirements.txt b/requirements.txt
index 2e239bb..24ea06d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-attrs==16.3.0             # via automat
+attrs==17.1.0             # via automat
 automat==0.6.0            # via twisted
 blinker==1.4
 click==6.7                # via flask