diff --git a/requirements/base.txt b/requirements/base.txt
index 7cf3aaf..b3adb4c 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -13,7 +13,7 @@ toml >=0.10.2,<0.11
 typer >=0.9,<0.10
 
 # JSON Schema
-jsonschema >=4.4,<4.5
+jsonschema >=4.4,<4.20
 
 # Easy logging.
 logzero >=1.7.0,<2.0