diff --git a/Makefile b/Makefile
index b8656d2..ac18361 100644
--- a/Makefile
+++ b/Makefile
@@ -33,6 +33,12 @@ ifeq ($(WITH_LIBUV),1)
 	override LDFLAGS += -luv
 endif
 
+# WITH_ASIO=1 builds with ASIO as event-loop
+ifeq ($(WITH_ASIO),1)
+	override CXXFLAGS += -pthread
+	override LDFLAGS += -lpthread
+endif
+
 # WITH_ASAN builds with sanitizers
 ifeq ($(WITH_ASAN),1)
 	override CXXFLAGS += -fsanitize=address -g
diff --git a/uSockets b/uSockets
index 18debf8..f6b00aa 160000
--- a/uSockets
+++ b/uSockets
@@ -1 +1 @@
-Subproject commit 18debf82410dcc1cc083af6c36df823c603dd28d
+Subproject commit f6b00aa8bf725d372b68c5f8ef9d10cac3610c21