diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..7f23bb8
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,36 @@
+{
+  "name": "spark-md5",
+  "version": "3.0.2",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "spark-md5",
+      "version": "3.0.2",
+      "license": "(WTFPL OR MIT)",
+      "devDependencies": {
+        "uglify-js": "^3.0.0"
+      }
+    },
+    "node_modules/uglify-js": {
+      "version": "3.14.1",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.14.1.tgz",
+      "integrity": "sha512-JhS3hmcVaXlp/xSo3PKY5R0JqKs5M3IV+exdLHW99qKvKivPO4Z8qbej6mte17SOPqAOVMjt/XGgWacnFSzM3g==",
+      "dev": true,
+      "bin": {
+        "uglifyjs": "bin/uglifyjs"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    }
+  },
+  "dependencies": {
+    "uglify-js": {
+      "version": "3.14.1",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.14.1.tgz",
+      "integrity": "sha512-JhS3hmcVaXlp/xSo3PKY5R0JqKs5M3IV+exdLHW99qKvKivPO4Z8qbej6mte17SOPqAOVMjt/XGgWacnFSzM3g==",
+      "dev": true
+    }
+  }
+}
diff --git a/package.json b/package.json
index 84f2b73..2e3f097 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "spark-md5",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "Lightning fast normal and incremental md5 for javascript",
   "main": "spark-md5.js",
   "files": [