diff --git a/resources/sql/patches/017.sessionkeys.sql b/resources/sql/patches/017.sessionkeys.sql
new file mode 100644
index 0000000000..9f55573728
--- /dev/null
+++ b/resources/sql/patches/017.sessionkeys.sql
@@ -0,0 +1,2 @@
+ALTER TABLE phabricator_user.user ADD UNIQUE KEY (phid);
+ALTER TABLE phabricator_user.phabricator_session ADD UNIQUE KEY (sessionKey);