diff --git a/package.json b/package.json
index 6502f77..7b53a54 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
     "@cli-engine/util": "^1.0.10",
     "@heroku-cli/tslint": "^1.0.3",
     "@types/ansi-styles": "^2.0.30",
+    "@types/debug": "^0.0.30",
     "@types/jest": "^22.0.0",
     "@types/node": "8.5.2",
     "jest": "22.0.4",
diff --git a/yarn.lock b/yarn.lock
index 84affc7..24c928b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -89,6 +89,10 @@
   version "2.0.30"
   resolved "https://registry.yarnpkg.com/@types/ansi-styles/-/ansi-styles-2.0.30.tgz#9a645299020a224afc6a8cd055195850b3c2af85"
 
+"@types/debug@^0.0.30":
+  version "0.0.30"
+  resolved "https://registry.yarnpkg.com/@types/debug/-/debug-0.0.30.tgz#dc1e40f7af3b9c815013a7860e6252f6352a84df"
+
 "@types/jest@^22.0.0":
   version "22.0.0"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-22.0.0.tgz#23009941178aad7979a9591e026f7a96054d7bc0"