diff --git a/package.json b/package.json
index c5d23de..e09c800 100644
--- a/package.json
+++ b/package.json
@@ -149,7 +149,6 @@
         ]
       },
       "development": {
-        "sourceMaps": "inline",
         "presets": [
           "babel-preset-power-assert"
         ],
@@ -181,7 +180,8 @@
           ]
         ]
       }
-    }
+    },
+    "sourceMaps": true
   },
   "xo": {
     "prettier": true,