diff --git a/spec-main/yarn.lock b/spec-main/yarn.lock
index bf3366be5fc90..af9b3a6ad4146 100644
--- a/spec-main/yarn.lock
+++ b/spec-main/yarn.lock
@@ -199,9 +199,9 @@ node-ensure@^0.0.0:
   integrity sha1-7K52QVDemYYexcgQ/V0Jaxg5Mqc=
 
 path-to-regexp@^1.7.0:
-  version "1.8.0"
-  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.8.0.tgz#887b3ba9d84393e87a0a0b9f4cb756198b53548a"
-  integrity sha512-n43JRhlUKUAlibEJhPeir1ncUID16QnEjNpwzNdO3Lm4ywrBpBZ5oLD0I6br9evr1Y9JTqwRtAh7JLoOzAQdVA==
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.9.0.tgz#5dc0753acbf8521ca2e0f137b4578b917b10cf24"
+  integrity sha512-xIp7/apCFJuUHdDLWe8O1HIkb0kQrOMb/0u6FXQjemHn/ii5LrIzU6bdECnsiTF/GjZkMEKg1xdiZwNqDYlZ6g==
   dependencies:
     isarray "0.0.1"