diff --git a/pubspec.yaml b/pubspec.yaml
index 8b3fbda..32280e6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ dependencies:
   file: ^6.0.0
   http: ^0.13.4
   meta: ^1.7.0
-  path_to_regexp: ^0.2.1
+  path_to_regexp: ^0.4.0
   mustache4dart: ^3.0.0-dev.0.0
   markdown: ^4.0.1