diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 000000000..96f041286
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,29 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Mocha Tests",
+            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+            "args": [
+                "-u",
+                "tdd",
+                "--timeout",
+                "999999",
+                "--colors",
+                "${workspaceFolder}/test"
+            ],
+            "internalConsoleOptions": "openOnSessionStart"
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "program": "${workspaceFolder}/serve"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index a03b84e2d..5cbc517cd 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "co": "^4.6.0",
     "ember-ajax": "^3.1.0",
     "ember-cli": "~3.3.0",
-    "ember-cli-addon-tests": "^0.11.0",
+    "ember-cli-addon-tests": "^0.11.1",
     "ember-cli-dependency-checker": "^3.0.0",
     "ember-cli-eslint": "^4.2.3",
     "ember-cli-htmlbars": "^3.0.0",
diff --git a/test/package-json-test.js b/test/package-json-test.js
index 9f5ca98bd..fe614b922 100644
--- a/test/package-json-test.js
+++ b/test/package-json-test.js
@@ -278,8 +278,8 @@ describe('generating package.json', function() {
 
 function addFastBootDeps(app) {
   return app.editPackageJSON(pkg => {
-    pkg['devDependencies']['fake-addon'] = '*';
-    pkg['devDependencies']['fake-addon-2'] = '*';
+    pkg['devDependencies']['fake-addon'] = `*`;
+    pkg['devDependencies']['fake-addon-2'] = `*`;
     pkg['fastbootDependencies'] = ["rsvp"];
     pkg['dependencies'] = {
       rsvp: '3.2.1',
diff --git a/yarn.lock b/yarn.lock
index d3a10f694..f23ad2ff3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2637,15 +2637,16 @@ ember-ajax@^3.1.0:
   dependencies:
     ember-cli-babel "^6.6.0"
 
-ember-cli-addon-tests@^0.11.0:
-  version "0.11.0"
-  resolved "https://registry.yarnpkg.com/ember-cli-addon-tests/-/ember-cli-addon-tests-0.11.0.tgz#7f5a07ce91317b9b06c792274e6d6a2cc43f1ee9"
+ember-cli-addon-tests@^0.11.1:
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/ember-cli-addon-tests/-/ember-cli-addon-tests-0.11.1.tgz#70c9164cb4126b2d17bbf9588ff34d97d4bfbad1"
+  integrity sha512-PI3ht9NrgfAwBgh3aPCVecajndvDKltTqRdtxt5bgfQJ3+AMs6moXhijKygwuAeT5btyhhLbceTfHRL/K8pX2w==
   dependencies:
     chalk "^2.0.1"
     debug "^3.0.0"
     denodeify "^1.2.1"
     findup-sync "^2.0.0"
-    fs-extra "^4.0.2"
+    fs-extra "^5.0.0"
     lodash "^4.0.0"
     semver "^5.3.0"
     symlink-or-copy "^1.1.3"
@@ -5276,6 +5277,7 @@ mute-stream@0.0.7:
 najax@^1.0.2:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/najax/-/najax-1.0.4.tgz#63fd8dbf15d18f24dc895b3a16fec66c136b8084"
+  integrity sha512-wsSacA+RkgY1wxRxXCT3tdqzmamEv9PLeoV/ub9SlLf2RngbPMSqc3A7H35XJDfURC0twMmZsnPdsYPkuuFSVg==
   dependencies:
     jquery-deferred "^0.3.0"
     lodash.defaultsdeep "^4.6.0"