diff --git a/x/ibc/light-clients/solomachine/types/update.go b/x/ibc/light-clients/solomachine/types/update.go
index 9dafb1247540..066b2baab96f 100644
--- a/x/ibc/light-clients/solomachine/types/update.go
+++ b/x/ibc/light-clients/solomachine/types/update.go
@@ -11,6 +11,8 @@ import (
 // CheckHeaderAndUpdateState checks if the provided header is valid and updates
 // the consensus state if appropriate. It returns an error if:
 // - the client or header provided are not parseable to solo machine types
+// - the header sequence does not match the current sequence
+// - the header timestamp is less than the consensus state timestamp
 // - the currently registered public key did not provide the update signature
 func (cs ClientState) CheckHeaderAndUpdateState(
 	ctx sdk.Context, cdc codec.BinaryMarshaler, clientStore sdk.KVStore,
@@ -37,7 +39,15 @@ func checkHeader(cdc codec.BinaryMarshaler, clientState *ClientState, header *He
 	if header.Sequence != clientState.Sequence {
 		return sdkerrors.Wrapf(
 			clienttypes.ErrInvalidHeader,
-			"sequence provided in the header does not match the client state sequence (%d != %d)", header.Sequence, clientState.Sequence,
+			"header sequence does not match the client state sequence (%d != %d)", header.Sequence, clientState.Sequence,
+		)
+	}
+
+	// assert update timestamp is not less than current consensus state timestamp
+	if header.Timestamp < clientState.ConsensusState.Timestamp {
+		return sdkerrors.Wrapf(
+			clienttypes.ErrInvalidHeader,
+			"header timestamp is less than to the consensus state timestamp (%d < %d)", header.Timestamp, clientState.ConsensusState.Timestamp,
 		)
 	}
 
diff --git a/x/ibc/light-clients/solomachine/types/update_test.go b/x/ibc/light-clients/solomachine/types/update_test.go
index f58a740e6d44..f07ad69f51ee 100644
--- a/x/ibc/light-clients/solomachine/types/update_test.go
+++ b/x/ibc/light-clients/solomachine/types/update_test.go
@@ -54,6 +54,15 @@ func (suite *SoloMachineTestSuite) TestCheckHeaderAndUpdateState() {
 			},
 			false,
 		},
+		{
+			"invalid timestamp in header",
+			func() {
+				clientState = suite.solomachine.ClientState()
+				h := suite.solomachine.CreateHeader()
+				h.Timestamp--
+				header = h
+			}, false,
+		},
 		{
 			"signature uses wrong sequence",
 			func() {