diff --git a/package.json b/package.json
index 6d498fb1..d5ccbd4d 100644
--- a/package.json
+++ b/package.json
@@ -544,7 +544,7 @@
     "semver": "^5.4.1",
     "sentence-case": "^2.1.1",
     "shallow-equal": "^1.0.0",
-    "simple-git": "^1.115.0",
+    "simple-git": "^3.15.0",
     "sitemap": "^5.0.0",
     "sitemap-webpack-plugin": "^0.6.0",
     "snake-case": "^2.1.0",
diff --git a/yarn.lock b/yarn.lock
index f948a548..8dca2fe0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1412,6 +1412,18 @@
     "@types/istanbul-reports" "^1.1.1"
     "@types/yargs" "^13.0.0"
 
+"@kwsites/file-exists@^1.1.1":
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/@kwsites/file-exists/-/file-exists-1.1.1.tgz#ad1efcac13e1987d8dbaf235ef3be5b0d96faa99"
+  integrity sha512-m9/5YGR18lIwxSFDwfE3oA7bWuq9kdau6ugN4H2rJeyhFQZcG9AgSHkQtSD15a8WvTgfz9aikZMrKPHvbpqFiw==
+  dependencies:
+    debug "^4.1.1"
+
+"@kwsites/promise-deferred@^1.1.1":
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/@kwsites/promise-deferred/-/promise-deferred-1.1.1.tgz#8ace5259254426ccef57f3175bc64ed7095ed919"
+  integrity sha512-GaHYm+c0O9MjZRu0ongGBRbinu8gVAMd2UZjji6jVmqKtZluZnptXGWhz1E8j8D2HJ3f/yMxKAUC0b+57wncIw==
+
 "@material-ui/core@3.9.3":
   version "3.9.3"
   resolved "https://registry.yarnpkg.com/@material-ui/core/-/core-3.9.3.tgz#d378c1f4beb18df9a534ca7258c2c33fb8e0e51f"
@@ -3007,7 +3019,7 @@ ansi-html@0.0.7:
 
 ansi-regex@^0.2.0, ansi-regex@^0.2.1:
   version "0.2.1"
-  resolved "http://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz#0d8e946967a3d8143f93e24e298525fc1b2235f9"
+  resolved "https://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz#0d8e946967a3d8143f93e24e298525fc1b2235f9"
 
 ansi-regex@^2.0.0:
   version "2.1.1"
@@ -5305,7 +5317,7 @@ chalk@*:
 
 chalk@^0.5.1:
   version "0.5.1"
-  resolved "http://registry.npmjs.org/chalk/-/chalk-0.5.1.tgz#663b3a648b68b55d04690d49167aa837858f2174"
+  resolved "https://registry.npmjs.org/chalk/-/chalk-0.5.1.tgz#663b3a648b68b55d04690d49167aa837858f2174"
   dependencies:
     ansi-styles "^1.1.0"
     escape-string-regexp "^1.0.0"
@@ -6861,29 +6873,24 @@ debug@2.6.8:
   dependencies:
     ms "2.0.0"
 
-debug@4.1.0, debug@^4.1.0:
+debug@4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.0.tgz#373687bffa678b38b1cd91f861b63850035ddc87"
   dependencies:
     ms "^2.1.1"
 
-debug@^3.0.0, debug@^3.0.1:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  dependencies:
-    ms "2.0.0"
-
-debug@^3.1.0, debug@^3.2.6:
+debug@^3.0.0, debug@^3.0.1, debug@^3.1.0, debug@^3.2.6:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   dependencies:
     ms "^2.1.1"
 
-debug@^4.0.0, debug@^4.0.1, debug@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+debug@^4.0.0, debug@^4.0.1, debug@^4.1.0, debug@^4.1.1, debug@^4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
+  integrity sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==
   dependencies:
-    ms "^2.1.1"
+    ms "2.1.2"
 
 decamelize-keys@^1.0.0:
   version "1.1.0"
@@ -7429,7 +7436,7 @@ duplexer3@^0.1.4:
 
 duplexer@^0.1.1, duplexer@~0.1.1:
   version "0.1.1"
-  resolved "http://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
+  resolved "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
 
 duplexify@^3.4.2, duplexify@^3.5.3:
   version "3.5.3"
@@ -10807,7 +10814,7 @@ is-number@^4.0.0:
 
 is-obj@^1.0.0, is-obj@^1.0.1:
   version "1.0.1"
-  resolved "http://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz#3e4729ac1f5fde025cd7d83a896dab9f4f67db0f"
+  resolved "https://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz#3e4729ac1f5fde025cd7d83a896dab9f4f67db0f"
 
 is-object@^1.0.1:
   version "1.0.1"
@@ -12315,7 +12322,7 @@ listr@^0.14.2:
 
 load-json-file@^1.0.0:
   version "1.1.0"
-  resolved "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
+  resolved "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
   dependencies:
     graceful-fs "^4.1.2"
     parse-json "^2.2.0"
@@ -12592,7 +12599,7 @@ lodash.isarray@^3.0.0:
 
 lodash.isempty@^4.4.0:
   version "4.4.0"
-  resolved "http://registry.npmjs.org/lodash.isempty/-/lodash.isempty-4.4.0.tgz#6f86cbedd8be4ec987be9aaf33c9684db1b31e7e"
+  resolved "https://registry.npmjs.org/lodash.isempty/-/lodash.isempty-4.4.0.tgz#6f86cbedd8be4ec987be9aaf33c9684db1b31e7e"
 
 lodash.isequal@^4.1.1, lodash.isequal@^4.5.0:
   version "4.5.0"
@@ -12773,7 +12780,7 @@ lodash.zip@^4.2.0:
 
 lodash@^3.8.0:
   version "3.10.1"
-  resolved "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
+  resolved "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
 lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.15.0, lodash@^4.17.1, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.2, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.5.0:
   version "4.17.11"
@@ -13473,7 +13480,7 @@ minimist@1.1.x, minimist@~1.1.0:
 
 minimist@1.2.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, "minimist@~ 1.2.0", minimist@~1.2.0:
   version "1.2.0"
-  resolved "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+  resolved "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
 minimist@^0.1.0:
   version "0.1.0"
@@ -13627,6 +13634,11 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
+
 ms@^2.0.0, ms@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
@@ -14359,7 +14371,7 @@ once@^1.3.0, once@^1.3.1, once@^1.4.0:
 
 onetime@^1.0.0:
   version "1.1.0"
-  resolved "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
+  resolved "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
 
 onetime@^2.0.0:
   version "2.0.1"
@@ -18144,7 +18156,7 @@ shellwords@^0.1.1:
 
 should-equal@^1.0.0:
   version "1.0.1"
-  resolved "http://registry.npmjs.org/should-equal/-/should-equal-1.0.1.tgz#0b6e9516f2601a9fb0bb2dcc369afa1c7e200af7"
+  resolved "https://registry.npmjs.org/should-equal/-/should-equal-1.0.1.tgz#0b6e9516f2601a9fb0bb2dcc369afa1c7e200af7"
   dependencies:
     should-type "^1.0.0"
 
@@ -18185,18 +18197,21 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
   integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
 
-simple-git@^1.115.0:
-  version "1.115.0"
-  resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-1.115.0.tgz#159a49cf95c5126d5903e36df67504a8c634e817"
-  dependencies:
-    debug "^4.0.1"
-
 simple-git@^1.85.0:
   version "1.107.0"
   resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-1.107.0.tgz#12cffaf261c14d6f450f7fdb86c21ccee968b383"
   dependencies:
     debug "^4.0.1"
 
+simple-git@^3.15.0:
+  version "3.15.0"
+  resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-3.15.0.tgz#301a95a943c4f9b0a21d051eb6e6d0ffe4c9754f"
+  integrity sha512-FiWoMPlcYHQ+ApRihUsGjC/ZmIlWj62S6MBCwOunczvXcLQt+9ZdrysDrR6QVepkRQfEAaBXrN2QtJKrN6zbtg==
+  dependencies:
+    "@kwsites/file-exists" "^1.1.1"
+    "@kwsites/promise-deferred" "^1.1.1"
+    debug "^4.3.4"
+
 simple-swizzle@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/simple-swizzle/-/simple-swizzle-0.2.2.tgz#a4da6b635ffcccca33f70d17cb92592de95e557a"
@@ -18919,7 +18934,7 @@ strip-ansi@*, strip-ansi@^5.2.0:
 
 strip-ansi@^0.3.0:
   version "0.3.0"
-  resolved "http://registry.npmjs.org/strip-ansi/-/strip-ansi-0.3.0.tgz#25f48ea22ca79187f3174a4db8759347bb126220"
+  resolved "https://registry.npmjs.org/strip-ansi/-/strip-ansi-0.3.0.tgz#25f48ea22ca79187f3174a4db8759347bb126220"
   dependencies:
     ansi-regex "^0.2.1"