diff --git a/package-lock.json b/package-lock.json
index 2dc0278..6f46534 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,19 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@kwsites/file-exists": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@kwsites/file-exists/-/file-exists-1.1.1.tgz",
+      "integrity": "sha512-m9/5YGR18lIwxSFDwfE3oA7bWuq9kdau6ugN4H2rJeyhFQZcG9AgSHkQtSD15a8WvTgfz9aikZMrKPHvbpqFiw==",
+      "requires": {
+        "debug": "^4.1.1"
+      }
+    },
+    "@kwsites/promise-deferred": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@kwsites/promise-deferred/-/promise-deferred-1.1.1.tgz",
+      "integrity": "sha512-GaHYm+c0O9MjZRu0ongGBRbinu8gVAMd2UZjji6jVmqKtZluZnptXGWhz1E8j8D2HJ3f/yMxKAUC0b+57wncIw=="
+    },
     "@octokit/endpoint": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/@octokit/endpoint/-/endpoint-3.1.1.tgz",
@@ -179,11 +192,11 @@
       }
     },
     "debug": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-      "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
       "requires": {
-        "ms": "^2.1.1"
+        "ms": "2.1.2"
       }
     },
     "deepmerge": {
@@ -500,9 +513,9 @@
       "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
     },
     "ms": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-      "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "mute-stream": {
       "version": "0.0.7",
@@ -636,11 +649,13 @@
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
     },
     "simple-git": {
-      "version": "1.107.0",
-      "resolved": "https://registry.npmjs.org/simple-git/-/simple-git-1.107.0.tgz",
-      "integrity": "sha512-t4OK1JRlp4ayKRfcW6owrWcRVLyHRUlhGd0uN6ZZTqfDq8a5XpcUdOKiGRNobHEuMtNqzp0vcJNvhYWwh5PsQA==",
+      "version": "3.15.0",
+      "resolved": "https://registry.npmjs.org/simple-git/-/simple-git-3.15.0.tgz",
+      "integrity": "sha512-FiWoMPlcYHQ+ApRihUsGjC/ZmIlWj62S6MBCwOunczvXcLQt+9ZdrysDrR6QVepkRQfEAaBXrN2QtJKrN6zbtg==",
       "requires": {
-        "debug": "^4.0.1"
+        "@kwsites/file-exists": "^1.1.1",
+        "@kwsites/promise-deferred": "^1.1.1",
+        "debug": "^4.3.4"
       }
     },
     "string-width": {
diff --git a/package.json b/package.json
index 18b57f7..237847c 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "inquirer": "^6.2.1",
     "lodash": "^4.17.11",
     "minimist": "^1.2.0",
-    "simple-git": "^1.107.0",
+    "simple-git": "^3.15.0",
     "touch": "^3.1.0"
   }
 }