diff --git a/tsconfig-test.json b/tsconfig-test.json
index 5546f6f7..78268372 100644
--- a/tsconfig-test.json
+++ b/tsconfig-test.json
@@ -10,7 +10,17 @@
     "removeComments": true,
     "noImplicitAny": true,
     "strictNullChecks": true,
-    "noUnusedLocals": true
+    "noUnusedLocals": true,
+    "types": [
+      "chai",
+      "chance",
+      "esprima",
+      "joi",
+      "mkdirp",
+      "mocha",
+      "node",
+      "sinon"
+    ]
   },
   "exclude": [
     "node_modules"
diff --git a/tsconfig.json b/tsconfig.json
index 39076b3d..626499e6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,16 @@
     "removeComments": true,
     "noImplicitAny": true,
     "strictNullChecks": true,
-    "noUnusedLocals": true
+    "noUnusedLocals": true,
+    "types": [
+      "chai",
+      "chance",
+      "esprima",
+      "joi",
+      "mkdirp",
+      "mocha",
+      "node",
+      "sinon"
+    ]
   }
 }
\ No newline at end of file