diff --git a/go.mod b/go.mod
index d58c129311b..1b459c2838e 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/avast/retry-go v2.6.0+incompatible
 	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
 	github.com/containerd/continuity v0.0.0-20200228182428-0f16d7a0959c // indirect
-	github.com/cosmos/cosmos-sdk v0.34.4-0.20201030193545-8e234bc4a5ad
+	github.com/cosmos/cosmos-sdk v0.40.0-rc2
 	github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d
 	github.com/gogo/protobuf v1.3.1
 	github.com/gorilla/mux v1.8.0
diff --git a/go.sum b/go.sum
index 2d9f02ccc1f..38b8cb8e84a 100644
--- a/go.sum
+++ b/go.sum
@@ -133,6 +133,8 @@ github.com/cosmos/cosmos-sdk v0.34.4-0.20201030152712-bd6c16b4628c/go.mod h1:KvZ
 github.com/cosmos/cosmos-sdk v0.34.4-0.20201030193545-8e234bc4a5ad h1:E+cVKUYOecpWlViLrs8KqX7IGs26d9XOswl9zRtLoRA=
 github.com/cosmos/cosmos-sdk v0.34.4-0.20201030193545-8e234bc4a5ad/go.mod h1:KvZzKUEc7KrMiiIeU0zKPMMwuxxn+R0Leo8vBSDgOeQ=
 github.com/cosmos/cosmos-sdk v0.39.1 h1:vhjf9PZh9ph8btAj9aBpHoVITgVVjNBpM3x5Gl/Vwac=
+github.com/cosmos/cosmos-sdk v0.40.0-rc2 h1:6OkkAZ9Qo/db7WUppxRMPVCV1r9MrI0HOYQ9COt138s=
+github.com/cosmos/cosmos-sdk v0.40.0-rc2/go.mod h1:KvZzKUEc7KrMiiIeU0zKPMMwuxxn+R0Leo8vBSDgOeQ=
 github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d h1:49RLWk1j44Xu4fjHb6JFYmeUnDORVwHNkDxaQ0ctCVU=
 github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d/go.mod h1:tSxLoYXyBmiFeKpvmq4dzayMdCjCnu8uqmCysIGBT2Y=
 github.com/cosmos/iavl v0.15.0-rc4 h1:P1wmET7BueqCzfxsn+BzVkDWDLY9ij2JNwkbIdM7RG8=
diff --git a/relayer/naive-strategy.go b/relayer/naive-strategy.go
index 77e10be0d67..cb83363191e 100644
--- a/relayer/naive-strategy.go
+++ b/relayer/naive-strategy.go
@@ -759,6 +759,9 @@ func acknowledgementsFromResultTx(src, dst *PathEnd, res *ctypes.ResultTx, sh *S
 						continue
 					}
 				}
+				if string(p.Key) == ackTag {
+					rp.ack = p.Value
+				}
 				if string(p.Key) == dataTag {
 					rp.packetData = p.Value
 				}