diff --git a/riak-protobuf.cabal b/riak-protobuf.cabal
--- a/riak-protobuf.cabal
+++ b/riak-protobuf.cabal
@@ -1,5 +1,5 @@
 name:                riak-protobuf
-version:             0.21.0.0
+version:             0.22.0.0
 synopsis:            Haskell types for the Riak protocol buffer API
 description:
   A set of Haskell types for interacting with the protocol buffer
@@ -110,8 +110,8 @@
     array >= 0.4,
     base == 4.*,
     parsec >= 3,
-    protocol-buffers >= 2.1.4 && < 2.3,
-    protocol-buffers-descriptor >= 2.1.4 && < 2.3
+    protocol-buffers >= 2.1.4 && < 2.5,
+    protocol-buffers-descriptor >= 2.1.4 && < 2.5
 
   ghc-options: -Wall -fno-warn-orphans