diff --git a/themes/2017/yarn.lock b/themes/2017/yarn.lock
index 7d461793..721a8be8 100644
--- a/themes/2017/yarn.lock
+++ b/themes/2017/yarn.lock
@@ -7440,8 +7440,8 @@ websocket-driver@>=0.5.1:
     websocket-extensions ">=0.1.1"
 
 websocket-extensions@>=0.1.1:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.3.tgz#5d2ff22977003ec687a4b87073dfbbac146ccf29"
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.4.tgz#7f8473bc839dfd87608adb95d7eb075211578a42"
 
 whet.extend@~0.9.9:
   version "0.9.9"