diff --git a/requirements.txt b/requirements.txt
index 6edbefd80..9452ffab4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,3 @@
 # This file is only for use by Heroku, with the old pip resolver
 idna>=2.5,<3
-# To address an odd case of email-validator not being installed
-# see https://github.com/dandi/dandi-api/pull/405
-pydantic[email]
 .
diff --git a/setup.py b/setup.py
index 73e879841..b53f1f84b 100644
--- a/setup.py
+++ b/setup.py
@@ -56,7 +56,6 @@
         'drf-extensions',
         'drf-yasg',
         'jsonschema',
-        'pydantic',
         'boto3[s3]',
         'more_itertools',
         'requests',