diff --git a/interfaces/Message.sol b/interfaces/Message.sol
index 4bdd23f..dc7c1e6 100644
--- a/interfaces/Message.sol
+++ b/interfaces/Message.sol
@@ -12,7 +12,7 @@ struct PostRequest {
 	// request nonce
 	uint64 nonce;
 	// Module Id of this request origin
-	address from;
+	bytes from;
 	// destination module id
 	bytes to;
 	// timestamp by which this request times out.
@@ -163,7 +163,7 @@ library Message {
 	}
 
 	function encodeRequest(PostRequest memory req) internal pure returns (bytes memory) {
-		return abi.encodePacked(req.source, req.dest, req.nonce, req.timeoutTimestamp, abi.encodePacked(req.from), req.to, req.body);
+		return abi.encodePacked(req.source, req.dest, req.nonce, req.timeoutTimestamp, req.from, req.to, req.body);
 	}
 
 	function hash(PostResponse memory res) internal pure returns (bytes32) {
diff --git a/package.json b/package.json
index cb0d492..ebf5a58 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@polytope-labs/ismp-solidity",
-	"version": "0.3.4",
+	"version": "0.3.5",
 	"description": "Hyperbridge Solidity SDK for the Interoperable state machine protocol",
 	"author": "Polytope Labs <hello@polytope.technology>",
 	"license": "Apache-2.0",