diff --git a/http2-grpc-types.cabal b/http2-grpc-types.cabal
--- a/http2-grpc-types.cabal
+++ b/http2-grpc-types.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 349f90f95352c0c528c813322451365c2dfeb1e8190fa26e94759fa4261cf16e
+-- hash: 6fea17114fd9c6684b39bf40b59d52a036cf2cd144e6590d71fd033a6d3cd865
 
 name:           http2-grpc-types
-version:        0.3.0.0
+version:        0.4.0.0
 synopsis:       Types for gRPC over HTTP2 common for client and servers.
 description:    Please see the README on GitHub at <https://github.com/lucasdicioccio/http2-grpc-types#readme>
 category:       Network
@@ -35,10 +35,10 @@
   hs-source-dirs:
       src
   build-depends:
-      base >=4.7 && <5
+      base >=4.11 && <5
     , binary >=0.8.5 && <0.11
     , bytestring >=0.10.8 && <0.11
     , case-insensitive >=1.2.0 && <1.3
-    , proto-lens >=0.3.1 && <0.4
+    , proto-lens >=0.5 && <0.6
     , zlib >=0.6.2 && <0.7
   default-language: Haskell2010