diff --git a/Makefile b/Makefile
index 5fa47e4..266998f 100644
--- a/Makefile
+++ b/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=shadowsocks-libev
-PKG_VERSION:=3.3.0
+PKG_VERSION:=3.3.1
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/shadowsocks/shadowsocks-libev.git
-PKG_SOURCE_VERSION:=ffad914dddb671c378e3060954d6d9fd6d492755
+PKG_SOURCE_VERSION:=615588bd3992a396cf88691a07cd387c0b7f51e6
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION)
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.xz