diff --git a/yarn.lock b/yarn.lock
index 60b6b23..d50e4b5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -104,8 +104,8 @@ are-we-there-yet@~1.1.2:
     readable-stream "^2.0.0 || ^1.1.13"
 
 argparse@^1.0.7:
-  version "1.0.9"
-  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.9.tgz#73d83bc263f86e97f8cc4f6bae1b0e90a7d22c86"
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
   dependencies:
     sprintf-js "~1.0.2"
 
@@ -862,7 +862,7 @@ compressible@~2.0.8:
 
 compression@1.6.2:
   version "1.6.2"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.6.2.tgz#cceb121ecc9d09c52d7ad0c3350ea93ddd402bc3"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.6.2.tgz#cceb121ecc9d09c52d7ad0c3350ea93ddd402bc3"
   dependencies:
     accepts "~1.3.3"
     bytes "2.3.0"
@@ -1515,9 +1515,9 @@ espree@^3.3.1:
     acorn "^4.0.1"
     acorn-jsx "^3.0.0"
 
-esprima@^2.6.0:
-  version "2.7.3"
-  resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
+esprima@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
 
 esrecurse@^4.1.0:
   version "4.1.0"
@@ -2607,11 +2607,11 @@ js-tokens@^2.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-2.0.0.tgz#79903f5563ee778cc1162e6dcf1a0027c97f9cb5"
 
 js-yaml@3.x, js-yaml@^3.4.3, js-yaml@^3.5.1:
-  version "3.6.1"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.6.1.tgz#6e5fe67d8b205ce4d22fad05b7781e8dadcc4b30"
+  version "3.13.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   dependencies:
     argparse "^1.0.7"
-    esprima "^2.6.0"
+    esprima "^4.0.0"
 
 jsbn@~0.1.0:
   version "0.1.0"