diff --git a/requirements.txt b/requirements.txt
index edd65a31..2578f031 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-jsonschema>=2.4.0
+jsonschema==2.6.0
 aiohttp>=2.3.3,<2.4.0 # pyup: ignore
 aiohttp-cors>=0.5.3,<0.6.0 # pyup: ignore
 yarl>=0.11
@@ -8,4 +8,4 @@ psutil>=3.0.0
 zipstream>=1.1.4
 typing>=3.5.3.0 # Otherwise yarl fails with python 3.4
 prompt-toolkit==1.0.15
-async-timeout<3.0.0 # pyup: ignore; 3.0 drops support for python 3.4
\ No newline at end of file
+async-timeout<3.0.0 # pyup: ignore; 3.0 drops support for python 3.4