diff --git a/yarn.lock b/yarn.lock
index aaf46a3..34e8754 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -962,7 +962,7 @@ circular-json@^0.3.1:
 
 class-extend@^0.1.0, class-extend@^0.1.1:
   version "0.1.2"
-  resolved "http://registry.npmjs.org/class-extend/-/class-extend-0.1.2.tgz#8057a82b00f53f82a5d62c50ef8cffdec6fabc34"
+  resolved "https://registry.npmjs.org/class-extend/-/class-extend-0.1.2.tgz#8057a82b00f53f82a5d62c50ef8cffdec6fabc34"
   dependencies:
     object-assign "^2.0.0"
 
@@ -3348,7 +3348,7 @@ object-assign@^4.0.0, object-assign@^4.0.1, object-assign@^4.1.0:
 
 object-inspect@^1.1.0:
   version "1.2.1"
-  resolved "http://registry.npmjs.org/object-inspect/-/object-inspect-1.2.1.tgz#3b62226eb8f6d441751c7d8f22a20ff80ac9dc3f"
+  resolved "https://registry.npmjs.org/object-inspect/-/object-inspect-1.2.1.tgz#3b62226eb8f6d441751c7d8f22a20ff80ac9dc3f"
 
 object-keys@^1.0.8, object-keys@^1.0.9:
   version "1.0.11"
@@ -3923,7 +3923,7 @@ regenerator-transform@0.9.8:
 
 regex-cache@^0.4.2:
   version "0.4.3"
-  resolved "http://registry.npmjs.org/regex-cache/-/regex-cache-0.4.3.tgz#9b1a6c35d4d0dfcef5711ae651e8e9d3d7114145"
+  resolved "https://registry.npmjs.org/regex-cache/-/regex-cache-0.4.3.tgz#9b1a6c35d4d0dfcef5711ae651e8e9d3d7114145"
   dependencies:
     is-equal-shallow "^0.1.3"
     is-primitive "^2.0.0"
@@ -4748,8 +4748,8 @@ write@^0.2.1:
     mkdirp "^0.5.1"
 
 ws@^1.1.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.1.tgz#082ddb6c641e85d4bb451f03d52f06eabdb1f018"
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.5.tgz#cbd9e6e75e09fc5d2c90015f21f0c40875e0dd51"
   dependencies:
     options ">=0.0.5"
     ultron "1.0.x"