From d6dd27f625a3f6f7e5defbeff8804a7820896de4 Mon Sep 17 00:00:00 2001
From: Rhys Arkins <rhys@arkins.net>
Date: Tue, 9 Nov 2021 05:15:10 +0100
Subject: [PATCH] fix: check dependency.tags defined

---
 lib/workers/repository/process/lookup/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/workers/repository/process/lookup/index.ts b/lib/workers/repository/process/lookup/index.ts
index a921b1536c..4c770309ab 100644
--- a/lib/workers/repository/process/lookup/index.ts
+++ b/lib/workers/repository/process/lookup/index.ts
@@ -112,7 +112,7 @@ export async function lookupUpdates(
       // Reapply package rules in case we missed something from sourceUrl
       config = applyPackageRules({ ...config, sourceUrl: res.sourceUrl });
       if (followTag) {
-        const taggedVersion = dependency.tags[followTag];
+        const taggedVersion = dependency.tags?.[followTag];
         if (!taggedVersion) {
           res.warnings.push({
             topic: depName,
-- 
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