diff --git a/lib/workers/repository/updates/generate.ts b/lib/workers/repository/updates/generate.ts
index 2eaac81e601bcb..bcb12795b0b792 100644
--- a/lib/workers/repository/updates/generate.ts
+++ b/lib/workers/repository/updates/generate.ts
@@ -27,7 +27,7 @@ function isTypesGroup(
 
 function sortTypesGroup(upgrades: BranchUpgradeConfig[]): void {
   const isTypesUpgrade = ({ depName }: BranchUpgradeConfig): boolean =>
-    depName.startsWith('@types/');
+    depName?.startsWith('@types/');
   const regularUpgrades = upgrades.filter(
     (upgrade) => !isTypesUpgrade(upgrade)
   );