diff --git a/yarn.lock b/yarn.lock
index c41d9f4..ee97776 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -796,7 +796,7 @@ compressible@~2.0.3:
 
 compression@1.5.0:
   version "1.5.0"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.5.0.tgz#ccc1a54788da1b3ad7729c49f6a00b3ac9adf47f"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.5.0.tgz#ccc1a54788da1b3ad7729c49f6a00b3ac9adf47f"
   dependencies:
     accepts "~1.2.9"
     bytes "2.1.0"
@@ -1218,8 +1218,8 @@ esprima@2.7.x, esprima@^2.7.1:
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
 
 esprima@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.0.tgz#4499eddcd1110e0b218bacf2fa7f7f59f55ca804"
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
 
 esprima@~1.1.1:
   version "1.1.1"
@@ -2128,8 +2128,8 @@ jade@0.26.3:
     mkdirp "0.3.0"
 
 js-yaml@3.x:
-  version "3.11.0"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
+  version "3.13.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"