diff --git a/package.json b/package.json
index dc6e4d8..8d8d565 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
   "license": "MIT",
   "dependencies": {
     "gluegun": "latest",
-    "simple-git": "^1.131.0"
+    "simple-git": "^3.15.0"
   },
   "devDependencies": {
     "@types/jest": "^24.0.18",
diff --git a/yarn.lock b/yarn.lock
index 77b671a..f8fe9fd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -294,6 +294,18 @@
     "@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==
+
 "@types/babel__core@^7.1.0":
   version "7.1.3"
   resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.1.3.tgz#e441ea7df63cd080dfcd02ab199e6d16a735fc30"
@@ -970,12 +982,12 @@ debug@^2.2.0, debug@^2.3.3:
   dependencies:
     ms "2.0.0"
 
-debug@^4.0.1, debug@^4.1.0, debug@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
-  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
+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@^1.2.0:
   version "1.2.0"
@@ -2581,7 +2593,7 @@ ms@2.0.0:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
   integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
 
-ms@^2.1.1:
+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==
@@ -3280,12 +3292,14 @@ 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@^1.131.0:
-  version "1.131.0"
-  resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-1.131.0.tgz#68d85bf6a706e418b8a92cae765d2ad358781e21"
-  integrity sha512-z/art7YYtmPnnLItT/j+nKwJt6ap6nHZ4D8sYo9PdCKK/ug56SN6m/evfxJk7uDV3e9JuCa8qIyDU2P3cxmiNQ==
+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:
-    debug "^4.0.1"
+    "@kwsites/file-exists" "^1.1.1"
+    "@kwsites/promise-deferred" "^1.1.1"
+    debug "^4.3.4"
 
 sisteransi@^1.0.3:
   version "1.0.4"