diff --git a/package.json b/package.json
index 9a97c01a..0681cbf2 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,8 @@
   "author": "Jeff Dickey @jdxcode",
   "bugs": "https://github.com/oclif/config/issues",
   "dependencies": {
-    "debug": "^3.1.0"
+    "debug": "^3.1.0",
+    "tslib": "^1.9.2"
   },
   "devDependencies": {
     "@oclif/errors": "^1.1.2",
@@ -16,10 +17,10 @@
     "@types/indent-string": "^3.0.0",
     "@types/lodash": "^4.14.109",
     "@types/mocha": "^5.2.0",
-    "@types/node": "^10.1.4",
+    "@types/node": "^10.3.0",
     "@types/wrap-ansi": "^3.0.0",
     "chai": "^4.1.2",
-    "fancy-test": "^1.0.9",
+    "fancy-test": "^1.1.0",
     "globby": "^8.0.1",
     "lodash": "^4.17.10",
     "mocha": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index 6c431e50..e971df78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -67,13 +67,23 @@
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.2.0.tgz#b3c8e69f038835db1a7fdc0b3d879fc50506e29e"
 
+"@types/nock@^9.1.3":
+  version "9.1.3"
+  resolved "https://registry.yarnpkg.com/@types/nock/-/nock-9.1.3.tgz#1d445679375b9e25afd449dc56585f81729454e8"
+  dependencies:
+    "@types/node" "*"
+
 "@types/node@*":
   version "9.4.5"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-9.4.5.tgz#d2a90c634208173d1b1a0a6ba9f1df3de62edcf5"
 
-"@types/node@^10.1.4":
-  version "10.1.4"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.1.4.tgz#606651d3f8a8bec08b8cb262161aab9209f4a29d"
+"@types/node@^10.3.0":
+  version "10.3.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.3.0.tgz#078516315a84d56216b5d4fed8f75d59d3b16cac"
+
+"@types/sinon@^5.0.1":
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-5.0.1.tgz#a15b36ec42f1f53166617491feabd1734cb03e21"
 
 "@types/wrap-ansi@^3.0.0":
   version "3.0.0"
@@ -425,10 +435,16 @@ extglob@^2.0.2:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
-fancy-test@^1.0.9:
-  version "1.0.9"
-  resolved "https://registry.yarnpkg.com/fancy-test/-/fancy-test-1.0.9.tgz#2d75d49abd3855802953c0f6dcf26dddb8762b09"
-  dependencies:
+fancy-test@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/fancy-test/-/fancy-test-1.1.0.tgz#c6bd432c9f816cc6fb048bb98c9a57f1fa517074"
+  dependencies:
+    "@types/chai" "^4.1.3"
+    "@types/lodash" "^4.14.109"
+    "@types/mocha" "^5.2.0"
+    "@types/nock" "^9.1.3"
+    "@types/node" "^10.3.0"
+    "@types/sinon" "^5.0.1"
     lodash "^4.17.10"
     stdout-stderr "^0.1.9"
 
@@ -1113,6 +1129,10 @@ tslib@1.9.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.0.tgz#e37a86fda8cbbaf23a057f473c9f4dc64e5fc2e8"
 
+tslib@^1.9.2:
+  version "1.9.2"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.2.tgz#8be0cc9a1f6dc7727c38deb16c2ebd1a2892988e"
+
 tslint-consistent-codestyle@^1.11.0:
   version "1.11.1"
   resolved "https://registry.yarnpkg.com/tslint-consistent-codestyle/-/tslint-consistent-codestyle-1.11.1.tgz#fa39ff5f5f8a25c537bd1e1f50de6190a2f4d70d"