diff --git a/requirements.txt b/requirements.txt
index 36d31e0..97fd3d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 aiohttp~=3.6
-quart~=0.11
+quart~=0.11,<0.15
 flask-wtf~=0.14
 hsluv~=0.0.2
 flask-babel~=1.0