diff --git a/Gopkg.lock b/Gopkg.lock
index 5413c3a0..20ae605a 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -238,8 +238,8 @@
     "server",
     "types"
   ]
-  revision = "9af8b7a7c87478869f8c280ed9539470b8f470b4"
-  version = "v0.11.0-rc4"
+  revision = "7cf66f570e2f47b286985e2d688b0a400c028e4c"
+  version = "v0.11.0-rc6"
 
 [[projects]]
   branch = "master"
@@ -293,7 +293,7 @@
     "ripemd160",
     "salsa20/salsa"
   ]
-  revision = "df8d4716b3472e4a531c33cedbe537dae921a1a9"
+  revision = "b47b1587369238182299fe4dad77d05b8b461e06"
 
 [[projects]]
   branch = "master"
@@ -374,6 +374,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "6d7d755329cebd1f640324a38507c41b638ca0898737db9d633c75eff58c46f0"
+  inputs-digest = "132980da98fc92b6c0dd988df07316a340f5fc91ee77593cf984ade4e3e5fd62"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index f0e8ab5b..f95fb296 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -71,7 +71,7 @@
 
 [[constraint]]
   name = "github.com/tendermint/abci"
-  version = "~0.11.0-rc4"
+  version = "~0.11.0-rc6"
 
 [[constraint]]
   name = "github.com/tendermint/go-crypto"
diff --git a/types/protobuf.go b/types/protobuf.go
index 00e36215..bfe3df34 100644
--- a/types/protobuf.go
+++ b/types/protobuf.go
@@ -32,12 +32,13 @@ type tm2pb struct{}
 
 func (tm2pb) Header(header *Header) abci.Header {
 	return abci.Header{
-		ChainID:       header.ChainID,
-		Height:        header.Height,
-		Time:          header.Time.Unix(),
-		NumTxs:        int32(header.NumTxs), // XXX: overflow
-		LastBlockHash: header.LastBlockID.Hash,
-		AppHash:       header.AppHash,
+		ChainID:        header.ChainID,
+		Height:         header.Height,
+		Time:           header.Time.Unix(),
+		NumTxs:         int32(header.NumTxs), // XXX: overflow
+		LastBlockHash:  header.LastBlockID.Hash,
+		ValidatorsHash: header.ValidatorsHash,
+		AppHash:        header.AppHash,
 	}
 }