diff --git a/db/src/main/resources/sql/flyway/V40__spec11threatmatch_remove_registrar_foreign_key.sql b/db/src/main/resources/sql/flyway/V40__spec11threatmatch_remove_registrar_foreign_key.sql
new file mode 100644
index 000000000..60bfe93c6
--- /dev/null
+++ b/db/src/main/resources/sql/flyway/V40__spec11threatmatch_remove_registrar_foreign_key.sql
@@ -0,0 +1,16 @@
+-- Copyright 2020 The Nomulus Authors. All Rights Reserved.
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+alter table if exists "Spec11ThreatMatch"
+  drop constraint "fk_safebrowsing_threat_registrar_id";
diff --git a/db/src/main/resources/sql/schema/nomulus.golden.sql b/db/src/main/resources/sql/schema/nomulus.golden.sql
index ca5a12da6..0933222d8 100644
--- a/db/src/main/resources/sql/schema/nomulus.golden.sql
+++ b/db/src/main/resources/sql/schema/nomulus.golden.sql
@@ -1596,14 +1596,6 @@ ALTER TABLE ONLY public."Spec11ThreatMatch"
     ADD CONSTRAINT fk_safebrowsing_threat_domain_repo_id FOREIGN KEY (domain_repo_id) REFERENCES public."Domain"(repo_id);
 
 
---
--- Name: Spec11ThreatMatch fk_safebrowsing_threat_registrar_id; Type: FK CONSTRAINT; Schema: public; Owner: -
---
-
-ALTER TABLE ONLY public."Spec11ThreatMatch"
-    ADD CONSTRAINT fk_safebrowsing_threat_registrar_id FOREIGN KEY (registrar_id) REFERENCES public."Registrar"(registrar_id);
-
-
 --
 -- Name: DomainHost fkfmi7bdink53swivs390m2btxg; Type: FK CONSTRAINT; Schema: public; Owner: -
 --