diff --git a/browserassets/package-lock.json b/browserassets/package-lock.json
index ce2e242832b92..6162af3e9c908 100644
--- a/browserassets/package-lock.json
+++ b/browserassets/package-lock.json
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       "integrity": "sha1-8htuQQFv9KfjFyDbxjoJAWvfmEU=",
       "dev": true,
+      "optional": true,
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       }
@@ -6334,9 +6454,9 @@
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-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
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@@ -6387,6 +6507,7 @@
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       "integrity": "sha1-qBmB6nCleUYTOIPwKcWCGok1mn8=",
       "dev": true,
+      "optional": true,
       "requires": {
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