diff --git a/package.json b/package.json
index df9dd36..692b0c1 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "gulp-replace": "^0.5.4",
     "gulp-rollup": "^2.5.1",
     "gulp-sourcemaps": "^2.2.0",
-    "gulp-typescript": "^3.1.3",
+    "gulp-typescript": "^3.1.4",
     "merge2": "^1.0.2",
     "mocha": "^3.1.0",
     "remap-istanbul": "^0.8.3",