diff --git a/frontend/platyplus/yarn.lock b/frontend/platyplus/yarn.lock
index c20efbb..0fd588b 100644
--- a/frontend/platyplus/yarn.lock
+++ b/frontend/platyplus/yarn.lock
@@ -7864,9 +7864,9 @@ websocket-driver@>=0.5.1:
     safe-buffer ">=5.1.0"
     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"
+websocket-extensions@0.1.4, websocket-extensions@>=0.1.1:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.4.tgz#7f8473bc839dfd87608adb95d7eb075211578a42"
 
 when@~3.6.x:
   version "3.6.4"
diff --git a/yarn.lock b/yarn.lock
index 183a47c..6444c62 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7588,10 +7588,6 @@ koa-convert@^1.2.0:
     co "^4.6.0"
     koa-compose "^3.0.0"
 
-koa-history-api-fallback@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/koa-history-api-fallback/-/koa-history-api-fallback-1.0.0.tgz#b232e7d118d0dd5afeea3613c649608d9b0f9087"
-
 koa-is-json@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/koa-is-json/-/koa-is-json-1.0.0.tgz#273c07edcdcb8df6a2c1ab7d59ee76491451ec14"
@@ -12381,8 +12377,8 @@ 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"
 
 whatwg-fetch@2.0.4:
   version "2.0.4"