diff --git a/changelog.d/9400.feature b/changelog.d/9400.feature
new file mode 100644
index 0000000000..3067c3907b
--- /dev/null
+++ b/changelog.d/9400.feature
@@ -0,0 +1 @@
+Add the shadow-banning status to the display user admin API.
\ No newline at end of file
diff --git a/docs/admin_api/user_admin_api.rst b/docs/admin_api/user_admin_api.rst
index 1eb674939e..33dfbcfb49 100644
--- a/docs/admin_api/user_admin_api.rst
+++ b/docs/admin_api/user_admin_api.rst
@@ -29,8 +29,9 @@ It returns a JSON body like the following:
             }
         ],
         "avatar_url": "<avatar_url>",
-        "admin": false,
-        "deactivated": false,
+        "admin": 0,
+        "deactivated": 0,
+        "shadow_banned": 0,
         "password_hash": "$2b$12$p9B4GkqYdRTPGD",
         "creation_ts": 1560432506,
         "appservice_id": null,
@@ -150,6 +151,7 @@ A JSON body is returned with the following shape:
                 "admin": 0,
                 "user_type": null,
                 "deactivated": 0,
+                "shadow_banned": 0,
                 "displayname": "<User One>",
                 "avatar_url": null
             }, {
@@ -158,6 +160,7 @@ A JSON body is returned with the following shape:
                 "admin": 1,
                 "user_type": null,
                 "deactivated": 0,
+                "shadow_banned": 0,
                 "displayname": "<User Two>",
                 "avatar_url": "<avatar_url>"
             }
@@ -262,7 +265,7 @@ The following actions are performed when deactivating an user:
 - Reject all pending invites
 - Remove all account validity information related to the user
 
-The following additional actions are performed during deactivation if``erase``
+The following additional actions are performed during deactivation if ``erase``
 is set to ``true``:
 
 - Remove the user's display name
diff --git a/synapse/storage/databases/main/__init__.py b/synapse/storage/databases/main/__init__.py
index 5d0845588c..70b49854cf 100644
--- a/synapse/storage/databases/main/__init__.py
+++ b/synapse/storage/databases/main/__init__.py
@@ -340,7 +340,7 @@ class DataStore(
             count = txn.fetchone()[0]
 
             sql = (
-                "SELECT name, user_type, is_guest, admin, deactivated, displayname, avatar_url "
+                "SELECT name, user_type, is_guest, admin, deactivated, shadow_banned, displayname, avatar_url "
                 + sql_base
                 + " ORDER BY u.name LIMIT ? OFFSET ?"
             )
diff --git a/synapse/storage/databases/main/registration.py b/synapse/storage/databases/main/registration.py
index 07e219aaed..d5b5507815 100644
--- a/synapse/storage/databases/main/registration.py
+++ b/synapse/storage/databases/main/registration.py
@@ -113,6 +113,7 @@ class RegistrationWorkerStore(CacheInvalidationWorkerStore):
                 "creation_ts",
                 "user_type",
                 "deactivated",
+                "shadow_banned",
             ],
             allow_none=True,
             desc="get_user_by_id",
@@ -372,23 +373,25 @@ class RegistrationWorkerStore(CacheInvalidationWorkerStore):
         """
 
         def set_shadow_banned_txn(txn):
+            user_id = user.to_string()
             self.db_pool.simple_update_one_txn(
                 txn,
                 table="users",
-                keyvalues={"name": user.to_string()},
+                keyvalues={"name": user_id},
                 updatevalues={"shadow_banned": shadow_banned},
             )
             # In order for this to apply immediately, clear the cache for this user.
             tokens = self.db_pool.simple_select_onecol_txn(
                 txn,
                 table="access_tokens",
-                keyvalues={"user_id": user.to_string()},
+                keyvalues={"user_id": user_id},
                 retcol="token",
             )
             for token in tokens:
                 self._invalidate_cache_and_stream(
                     txn, self.get_user_by_access_token, (token,)
                 )
+            self._invalidate_cache_and_stream(txn, self.get_user_by_id, (user_id,))
 
         await self.db_pool.runInteraction("set_shadow_banned", set_shadow_banned_txn)
 
diff --git a/tests/rest/admin/test_user.py b/tests/rest/admin/test_user.py
index ff75199c8e..ba26895391 100644
--- a/tests/rest/admin/test_user.py
+++ b/tests/rest/admin/test_user.py
@@ -769,6 +769,7 @@ class UsersListTestCase(unittest.HomeserverTestCase):
             self.assertIn("admin", u)
             self.assertIn("user_type", u)
             self.assertIn("deactivated", u)
+            self.assertIn("shadow_banned", u)
             self.assertIn("displayname", u)
             self.assertIn("avatar_url", u)
 
@@ -1146,6 +1147,7 @@ class UserRestTestCase(unittest.HomeserverTestCase):
         self.assertEqual(False, channel.json_body["admin"])
         self.assertEqual(False, channel.json_body["is_guest"])
         self.assertEqual(False, channel.json_body["deactivated"])
+        self.assertEqual(False, channel.json_body["shadow_banned"])
         self.assertEqual("mxc://fibble/wibble", channel.json_body["avatar_url"])
 
     @override_config(
diff --git a/tests/storage/test_registration.py b/tests/storage/test_registration.py
index abbaed7cdc..4eb41c46e8 100644
--- a/tests/storage/test_registration.py
+++ b/tests/storage/test_registration.py
@@ -52,6 +52,7 @@ class RegistrationStoreTestCase(unittest.TestCase):
                 "creation_ts": 1000,
                 "user_type": None,
                 "deactivated": 0,
+                "shadow_banned": 0,
             },
             (yield defer.ensureDeferred(self.store.get_user_by_id(self.user_id))),
         )