diff --git a/requirements.txt b/requirements.txt
index cf3a4712..18eb7fb3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ click
 jinja2
 requests
 pyyaml
-typesystem>=0.2.0
+typesystem>=0.2.0 and typesystem<0.3.0
 
 # Testing requirements
 black