diff --git a/sing-box/Makefile b/sing-box/Makefile
index e93e3b29b..781e55ba4 100644
--- a/sing-box/Makefile
+++ b/sing-box/Makefile
@@ -5,12 +5,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=sing-box
-PKG_VERSION:=1.6.5
+PKG_VERSION:=1.6.6
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/SagerNet/sing-box/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=a9a8f0ed22c566bfe7cabcbe947384639e7e0eb6f5f287c2b8c7c9d27820e289
+PKG_HASH:=88c8825f6e8af2e46a16e8a85ceb5e1c7c0795b59cad93c8327288ec7b8249e0
 
 PKG_LICENSE:=GPL-3.0-or-later
 PKG_LICENSE_FILES:=LICENSE