diff --git a/lib/workers/repository/process/lookup/index.ts b/lib/workers/repository/process/lookup/index.ts
index 4c874fd76362e86bd40dc7431fabde3fd0c85242..db625850ac0e4476d87c070e62bb1b352584e460 100644
--- a/lib/workers/repository/process/lookup/index.ts
+++ b/lib/workers/repository/process/lookup/index.ts
@@ -137,7 +137,7 @@ export async function lookupUpdates(
   const version = allVersioning.get(config.versioning);
   const res: UpdateResult = { updates: [], warnings: [] } as any;
 
-  const isValid = version.isValid(currentValue);
+  const isValid = currentValue && version.isValid(currentValue);
   if (!isValid) res.skipReason = 'invalid-value';
 
   if (isValid) {