diff --git a/AsyncNetwork/AsyncConnection.m b/AsyncNetwork/AsyncConnection.m
index b96ed36..d853197 100644
--- a/AsyncNetwork/AsyncConnection.m
+++ b/AsyncNetwork/AsyncConnection.m
@@ -170,7 +170,7 @@ - (void)start;
 	
 	// create the socket
 	_socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:AsyncNetworkDispatchQueue()];
-	[self.socket setIPv6Enabled:NO];
+	[self.socket setIPv6Enabled:YES];
 	
 	// connect to host and port
 	NSError *error;
diff --git a/AsyncNetwork/AsyncServer.m b/AsyncNetwork/AsyncServer.m
index 0536b7c..04b23cd 100644
--- a/AsyncNetwork/AsyncServer.m
+++ b/AsyncNetwork/AsyncServer.m
@@ -158,7 +158,7 @@ - (void)setupListenSocket;
 	
 	// set up listening socket
 	_listenSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:AsyncNetworkDispatchQueue()];
-	[self.listenSocket setIPv6Enabled:NO];
+	[self.listenSocket setIPv6Enabled:YES];
 	NSError *error;
 	if (![self.listenSocket acceptOnPort:self.port error:&error]) {
 			if ([self.delegate respondsToSelector:@selector(server:didFailWithError:)]) {