diff --git a/themes/casper/yarn.lock b/themes/casper/yarn.lock
index 6bbeafd..d43dc56 100644
--- a/themes/casper/yarn.lock
+++ b/themes/casper/yarn.lock
@@ -1050,7 +1050,7 @@ esutils@^2.0.2:
 
 event-stream@^3.1.7:
   version "3.3.4"
-  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  resolved "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
   dependencies:
     duplexer "~0.1.1"
     from "~0"
@@ -4102,8 +4102,8 @@ websocket-driver@>=0.3.6:
     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"
 
 when@^3.7.5:
   version "3.7.8"