diff --git a/golem-component-service/db/migration/postgres/007__add_object_store_key.sql b/golem-component-service/db/migration/postgres/007__add_object_store_key.sql
index f67cdc50b..cfe02467e 100644
--- a/golem-component-service/db/migration/postgres/007__add_object_store_key.sql
+++ b/golem-component-service/db/migration/postgres/007__add_object_store_key.sql
@@ -1,2 +1,2 @@
 ALTER TABLE component_versions
-    ADD COLUMN IF NOT EXISTS object_store_key text;
+    ADD COLUMN IF NOT EXISTS object_store_key text NOT NULL default 'default_value';
\ No newline at end of file
diff --git a/golem-component-service/db/migration/postgres/008__add_transformed_object_store_key.sql b/golem-component-service/db/migration/postgres/008__add_transformed_object_store_key.sql
index ebc72a384..5f7d73d97 100644
--- a/golem-component-service/db/migration/postgres/008__add_transformed_object_store_key.sql
+++ b/golem-component-service/db/migration/postgres/008__add_transformed_object_store_key.sql
@@ -1,2 +1,2 @@
 ALTER TABLE component_versions
-    ADD COLUMN IF NOT EXISTS transformed_object_store_key text;
+    ADD COLUMN IF NOT EXISTS transformed_object_store_key text NOT NULL default 'default_value';;