diff --git a/package.json b/package.json
index 2b9de06..d7ef4db 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "browser": "browserify build/test/map.spec.js build/test/set.spec.js > test/test_bundle.js",
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "pretest": "tsc",
+    "prepublish": "tsc",
     "test": "tape build/test/**/*.spec.js | tap-spec",
     "test-cover": "nyc tape build/test/**/*.spec.js | tap-nyc",
     "tslint": "tslint index.ts ./test/**/.ts ./src/**/*.ts"