diff --git a/yarn.lock b/yarn.lock
index 1523e1d..6dbfb94 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -178,10 +178,6 @@ command-join@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/command-join/-/command-join-2.0.0.tgz#52e8b984f4872d952ff1bdc8b98397d27c7144cf"
 
-commander@~2.20.3:
-  version "2.20.3"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
-
 compare-func@^1.3.1:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/compare-func/-/compare-func-1.3.2.tgz#99dd0ba457e1f9bc722b12c08ec33eeab31fa648"
@@ -603,12 +599,13 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
 handlebars@^4.0.2:
-  version "4.5.3"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.5.3.tgz#5cf75bd8714f7605713511a56be7c349becb0482"
+  version "4.7.7"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.7.tgz#9ce33416aad02dbd6c8fafa8240d5d98004945a1"
   dependencies:
+    minimist "^1.2.5"
     neo-async "^2.6.0"
-    optimist "^0.6.1"
     source-map "^0.6.1"
+    wordwrap "^1.0.0"
   optionalDependencies:
     uglify-js "^3.1.4"
 
@@ -926,13 +923,9 @@ minimist@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.1.0.tgz#99df657a52574c21c9057497df742790b2b4c0de"
 
-minimist@^1.1.3:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
-
-minimist@~0.0.1:
-  version "0.0.10"
-  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
+minimist@^1.1.3, minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
 
 mkdirp@~0.5.0:
   version "0.5.1"
@@ -953,8 +946,8 @@ mute-stream@0.0.7:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
 
 neo-async@^2.6.0:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.2.tgz#b4aafb93e3aeb2d8174ca53cf163ab7d7308305f"
 
 normalize-package-data@^2.3.0, normalize-package-data@^2.3.2, normalize-package-data@^2.3.4, normalize-package-data@^2.3.5:
   version "2.4.0"
@@ -1000,13 +993,6 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
-optimist@^0.6.1:
-  version "0.6.1"
-  resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
-  dependencies:
-    minimist "~0.0.1"
-    wordwrap "~0.0.2"
-
 os-locale@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-2.1.0.tgz#42bc2900a6b5b8bd17376c8e882b65afccf24bf2"
@@ -1241,7 +1227,7 @@ sort-keys@^2.0.0:
   dependencies:
     is-plain-obj "^1.0.0"
 
-source-map@^0.6.1, source-map@~0.6.1:
+source-map@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
@@ -1400,11 +1386,8 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
 uglify-js@^3.1.4:
-  version "3.7.4"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.7.4.tgz#e6d83a1aa32ff448bd1679359ab13d8db0fe0743"
-  dependencies:
-    commander "~2.20.3"
-    source-map "~0.6.1"
+  version "3.13.5"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.13.5.tgz#5d71d6dbba64cf441f32929b1efce7365bb4f113"
 
 universalify@^0.1.0:
   version "0.1.1"
@@ -1451,9 +1434,9 @@ wide-align@^1.1.0:
   dependencies:
     string-width "^1.0.2"
 
-wordwrap@~0.0.2:
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
+wordwrap@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
 
 wrap-ansi@^2.0.0:
   version "2.1.0"