diff --git a/pkg/services/sqlstore/migrations/kv_store_mig.go b/pkg/services/sqlstore/migrations/kv_store_mig.go
index 3bdd39335a2..252daf0a134 100644
--- a/pkg/services/sqlstore/migrations/kv_store_mig.go
+++ b/pkg/services/sqlstore/migrations/kv_store_mig.go
@@ -25,3 +25,10 @@ func addKVStoreMigrations(mg *Migrator) {
 
 	mg.AddMigration("add index kv_store.org_id-namespace-key", NewAddIndexMigration(kvStoreV1, kvStoreV1.Indices[0]))
 }
+
+// addKVStoreMySQLValueTypeLongTextMigration adds a migration to change the column type of kv_store.value to LONGTEXT for
+// MySQL to be more inline size-wise with PSQL (TEXT) and SQLite.
+func addKVStoreMySQLValueTypeLongTextMigration(mg *Migrator) {
+	mg.AddMigration("alter kv_store.value to longtext", NewRawSQLMigration("").
+		Mysql("ALTER TABLE kv_store MODIFY value LONGTEXT NOT NULL;"))
+}
diff --git a/pkg/services/sqlstore/migrations/migrations.go b/pkg/services/sqlstore/migrations/migrations.go
index 50968f6c378..1fc33893d00 100644
--- a/pkg/services/sqlstore/migrations/migrations.go
+++ b/pkg/services/sqlstore/migrations/migrations.go
@@ -113,6 +113,8 @@ func (*OSSMigrations) AddMigration(mg *Migrator) {
 	ssosettings.AddMigration(mg)
 
 	ualert.CreateOrgMigratedKVStoreEntries(mg)
+
+	addKVStoreMySQLValueTypeLongTextMigration(mg)
 }
 
 func addStarMigrations(mg *Migrator) {