diff --git a/package.json b/package.json
index e8b24342..19bc1251 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "prember": "~1.0.0",
     "prember-crawler": "^0.1.0",
     "qunit-dom": "^0.8.3",
-    "simple-git": "^1.10.0"
+    "simple-git": "^3.15.0"
   },
   "keywords": [
     "ember-addon",
diff --git a/yarn.lock b/yarn.lock
index 91347487..0c77e318 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -681,6 +681,16 @@
   dependencies:
     "@glimmer/util" "^0.36.5"
 
+"@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"
+  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"
+
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz#524af240d1a360527b730475ecfa1344aa540dde"
@@ -2680,7 +2690,13 @@ debug@^3.0.0, debug@^3.1.0:
   dependencies:
     ms "^2.1.1"
 
-debug@^4.0.1, debug@^4.1.0, debug@~4.1.0:
+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"
+  dependencies:
+    ms "2.1.2"
+
+debug@~4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.0.tgz#373687bffa678b38b1cd91f861b63850035ddc87"
   dependencies:
@@ -5787,6 +5803,10 @@ 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"
+
 ms@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
@@ -7043,11 +7063,13 @@ simple-dom@^1.0.0:
     "@simple-dom/serializer" "^1.4.0"
     "@simple-dom/void-map" "^1.4.0"
 
-simple-git@^1.10.0:
-  version "1.107.0"
-  resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-1.107.0.tgz#12cffaf261c14d6f450f7fdb86c21ccee968b383"
+simple-git@^3.15.0:
+  version "3.15.0"
+  resolved "https://registry.yarnpkg.com/simple-git/-/simple-git-3.15.0.tgz#301a95a943c4f9b0a21d051eb6e6d0ffe4c9754f"
   dependencies:
-    debug "^4.0.1"
+    "@kwsites/file-exists" "^1.1.1"
+    "@kwsites/promise-deferred" "^1.1.1"
+    debug "^4.3.4"
 
 simple-html-tokenizer@^0.3.0:
   version "0.3.0"