diff --git a/setup.py b/setup.py
index 3f0d3ba..a5003b0 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
     url="https://github.com/HDRUK/schemata-2",
     packages=setuptools.find_packages(),
     install_requires=[
-        "pydantic==2.0.3",
+        "pydantic[email]==2.0.3",
         "pytest==7.4.2"
     ],
     classifiers=[