diff --git a/package.json b/package.json
index d5f1cf2..dfee954 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "noflo-math": "0.2.0",
     "noflo-objects": "^0.3.0",
     "noflo-routers": "~0.3.0",
-    "noflo-strings": "^0.3.0",
+    "noflo-strings": "^0.4.0",
     "noflo-webserver": "~0.0.6",
     "noflo-websocket": "^0.1.5"
   },