diff --git a/package.json b/package.json
index 75cba16..e48d98d 100644
--- a/package.json
+++ b/package.json
@@ -37,5 +37,13 @@
   "bugs": {
     "url": "https://github.com/klemek/gitblog.md/issues"
   },
-  "homepage": "https://github.com/klemek/gitblog.md#readme"
+  "homepage": "https://github.com/klemek/gitblog.md#readme",
+  "jest": {
+    "collectCoverageFrom": [
+      "src/**/*.js",
+      "!/node_modules/",
+      "!src/server.js",
+      "!src/postinstall.js"
+    ]
+  }
 }