diff --git a/package.json b/package.json
index b6c66fa..811ae5d 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "gulp": "^5",
     "gulp-autoprefixer": "^8",
     "gulp-sass": "^5",
-    "gulp-sourcemaps": "^3",
+    "gulp-sourcemaps": "^2.6.5",
     "gulp-zip": "^5.0.1",
     "kids-on-brooms": "file:"
   },