diff --git a/connection/connection_test.go b/connection/connection_test.go
index 11ad54a..3aaa349 100644
--- a/connection/connection_test.go
+++ b/connection/connection_test.go
@@ -123,7 +123,7 @@ func TestProcessAuthTimeout(t *testing.T) {
 	}()
 
 	conn, _ := ln.Accept()
-	// Giving the client inconsistent keypair to make EDH fail
+
 	pub, priv, _ := ed25519.GenerateKey(rand.Reader)
 	rc := NewInboundConnection(conn)
 	err := HandleInboundConnection(rc).ProcessAuthAsV3Server(identity.InitializeV3("", &priv, &pub), ServerAuthValid3DH)
diff --git a/inbound_version_negotiation_test.go b/inbound_version_negotiation_test.go
index 665cfc3..ef288fd 100644
--- a/inbound_version_negotiation_test.go
+++ b/inbound_version_negotiation_test.go
@@ -16,7 +16,7 @@ func TestNegotiateInboundVersions(t *testing.T) {
 		}
 		defer conn.Close()
 
-		conn.Write([]byte{0x49, 0x4D, 0x01, 0x01})
+		conn.Write([]byte{0x49, 0x4D, 0x01, 0x03})
 	}
 
 	l, err := net.Listen("tcp", ":4000")
diff --git a/outbound_version_negotiation_test.go b/outbound_version_negotiation_test.go
index c71fbae..ccc4341 100644
--- a/outbound_version_negotiation_test.go
+++ b/outbound_version_negotiation_test.go
@@ -14,7 +14,7 @@ func TestOutboundVersionNegotiation(t *testing.T) {
 		b := make([]byte, 4)
 		n, err := conn.Read(b)
 		if n == 4 && err == nil {
-			conn.Write([]byte{0x01})
+			conn.Write([]byte{0x03})
 		}
 		conn.Close()
 	}()
diff --git a/ricochet.go b/ricochet.go
index c8fab46..de4c74d 100644
--- a/ricochet.go
+++ b/ricochet.go
@@ -31,7 +31,7 @@ func Open(acn connectivity.ACN, remoteHostname string) (*connection.Connection,
 // NegotiateVersionOutbound takes an open network connection and executes
 // the ricochet version negotiation procedure.
 func NegotiateVersionOutbound(conn net.Conn, remoteHostname string) (*connection.Connection, error) {
-	versions := []byte{0x49, 0x4D, 0x01, 0x01}
+	versions := []byte{0x49, 0x4D, 0x01, 0x03}
 	if n, err := conn.Write(versions); err != nil || n < len(versions) {
 		return nil, utils.VersionNegotiationError
 	}
@@ -41,7 +41,7 @@ func NegotiateVersionOutbound(conn net.Conn, remoteHostname string) (*connection
 		return nil, utils.VersionNegotiationError
 	}
 
-	if res[0] != 0x01 {
+	if res[0] != 0x03 {
 		return nil, utils.VersionNegotiationFailed
 	}
 	rc := connection.NewOutboundConnection(conn, remoteHostname)
@@ -52,7 +52,7 @@ func NegotiateVersionOutbound(conn net.Conn, remoteHostname string) (*connection
 // as if that connection was a client. Returns a ricochet connection if successful
 // error otherwise.
 func NegotiateVersionInbound(conn net.Conn) (*connection.Connection, error) {
-	versions := []byte{0x49, 0x4D, 0x01, 0x01}
+	versions := []byte{0x49, 0x4D, 0x01, 0x03}
 	// Read version response header
 	header := make([]byte, 3)
 	if _, err := io.ReadAtLeast(conn, header, len(header)); err != nil {
@@ -71,7 +71,7 @@ func NegotiateVersionInbound(conn net.Conn) (*connection.Connection, error) {
 
 	selectedVersion := byte(0xff)
 	for _, v := range versionList {
-		if v == 0x01 {
+		if v == 0x03 {
 			selectedVersion = v
 			break
 		}
diff --git a/ricochet_test.go b/ricochet_test.go
index c4c7b27..ca2defd 100644
--- a/ricochet_test.go
+++ b/ricochet_test.go
@@ -13,7 +13,7 @@ func SimpleServer() {
 	b := make([]byte, 4)
 	n, err := conn.Read(b)
 	if n == 4 && err == nil {
-		conn.Write([]byte{0x01})
+		conn.Write([]byte{0x03})
 	}
 	conn.Close()
 }