diff --git a/shadowsocks-csharp/packages.config b/shadowsocks-csharp/packages.config
index 93252521..bbfe796d 100644
--- a/shadowsocks-csharp/packages.config
+++ b/shadowsocks-csharp/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Caseless.Fody" version="1.3.7" targetFramework="net40-client" developmentDependency="true" />
+  <package id="Caseless.Fody" version="1.4.0" targetFramework="net40-client" developmentDependency="true" />
   <package id="Costura.Fody" version="1.3.3.0" targetFramework="net4-client" developmentDependency="true" />
   <package id="Fody" version="1.29.4" targetFramework="net40-client" developmentDependency="true" />
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net40-client" />