diff --git a/requirements-dev.txt b/requirements-dev.txt
index 245fe409c..c549af1ab 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,6 +7,7 @@ git+https://github.com/asdf-format/asdf-wcs-schemas
 git+https://github.com/astropy/astropy
 git+https://github.com/spacetelescope/gwcs
 git+https://github.com/yaml/pyyaml.git
+git+https://github.com/python-jsonschema/jsonschema
 
 scipy>=0.0.dev0
 numpy>=0.0.dev0