diff --git a/yarn.lock b/yarn.lock
index 41056ced..643d3ce8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2987,11 +2987,6 @@ es-to-primitive@^1.2.0:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
-es6-object-assign@^1.0.3:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/es6-object-assign/-/es6-object-assign-1.1.0.tgz#c2c3582656247c39ea107cb1e6652b6f9f24523c"
-  integrity sha1-wsNYJlYkfDnqEHyx5mUrb58kUjw=
-
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -5471,7 +5466,7 @@ minimist@1.1.x:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.1.3.tgz#3bedfd91a92d39016fcfaa1c681e8faa1a1efda8"
   integrity sha1-O+39kaktOQFvz6ocaB6Pqhoe/ag=
 
-minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@^1.2.5:
+minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@^1.2.3, minimist@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
   integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
@@ -7504,10 +7499,10 @@ shell-quote@^1.6.1:
     array-reduce "~0.0.0"
     jsonify "~0.0.0"
 
-shelljs@^0.8.1:
-  version "0.8.3"
-  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.3.tgz#a7f3319520ebf09ee81275b2368adb286659b097"
-  integrity sha512-fc0BKlAWiLpwZljmOvAOTE/gXawtCoNrP5oaY7KIaQbbyHeQVg01pSEuEGvGh3HEdBU4baCD7wQBwADmM/7f7A==
+shelljs@^0.8.4:
+  version "0.8.4"
+  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.4.tgz#de7684feeb767f8716b326078a8a00875890e3c2"
+  integrity sha512-7gk3UZ9kOfPLIAbslLzyWeGiEqx9e3rxwZM0KE6EL8GlGwjym9Mrlx5/p33bWTu9YG6vcS4MBxYZDHYr5lr8BQ==
   dependencies:
     glob "^7.0.0"
     interpret "^1.0.0"
@@ -7519,13 +7514,12 @@ shellwords@^0.1.1:
   integrity sha512-vFwSUfQvqybiICwZY5+DAWIPLKsWO31Q91JSKl3UYv+K5c2QRPzn0qzec6QPu1Qc9eHYItiP3NdJqNVqetYAww==
 
 shx@^0.3.2:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/shx/-/shx-0.3.2.tgz#40501ce14eb5e0cbcac7ddbd4b325563aad8c123"
-  integrity sha512-aS0mWtW3T2sHAenrSrip2XGv39O9dXIFUqxAEWHEOS1ePtGIBavdPJY1kE2IHl14V/4iCbUiNDPGdyYTtmhSoA==
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/shx/-/shx-0.3.3.tgz#681a88c7c10db15abe18525349ed474f0f1e7b9f"
+  integrity sha512-nZJ3HFWVoTSyyB+evEKjJ1STiixGztlqwKLTUNV5KqMWtGey9fTd4KU1gdZ1X9BV6215pswQ/Jew9NsuS/fNDA==
   dependencies:
-    es6-object-assign "^1.0.3"
-    minimist "^1.2.0"
-    shelljs "^0.8.1"
+    minimist "^1.2.3"
+    shelljs "^0.8.4"
 
 sigmund@^1.0.1:
   version "1.0.1"