diff --git a/registry/migrations/20231221204029_add-unique-constraints-to-v1-tables.sql b/registry/migrations/20231221204029_add-unique-constraints-to-v1-tables.sql
new file mode 100644
index 00000000..3b54eb75
--- /dev/null
+++ b/registry/migrations/20231221204029_add-unique-constraints-to-v1-tables.sql
@@ -0,0 +1,14 @@
+ALTER TABLE v1.extension_dependency
+ADD CONSTRAINT unique_dependency UNIQUE (extension_version_id, depends_on_extension_name);
+
+ALTER TABLE v1.extension_configurations
+ADD CONSTRAINT unique_extension_config UNIQUE (extension_version_id, configuration_name);
+
+ALTER TABLE v1.trunk_project_postgres_support
+ADD CONSTRAINT unique_trunk_project_postgres_support UNIQUE (postgres_version_id, trunk_project_version_id);
+
+ALTER TABLE v1.extensions_loadable_libraries
+ADD CONSTRAINT unique_extension_library UNIQUE (extension_version_id, library_name);
+
+ALTER TABLE v1.control_file
+ADD CONSTRAINT control_file_extension_version_id_unique UNIQUE (extension_version_id);