diff --git a/lib/archivesspace/client/version.rb b/lib/archivesspace/client/version.rb
index 3c1fcf4..34213d9 100644
--- a/lib/archivesspace/client/version.rb
+++ b/lib/archivesspace/client/version.rb
@@ -2,6 +2,6 @@
 
 module ArchivesSpace
   class Client
-    VERSION = "0.3.0"
+    VERSION = "0.4.0"
   end
 end