diff --git a/requirements.txt b/requirements.txt
index 7cc8f21b..06d1d0dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 jsonschema>=2.4.0
-aiohttp==0.19.0
+aiohttp==0.21.2
 Jinja2>=2.7.3
 raven>=5.2.0
 psutil>=3.0.0