diff --git a/libs/libmodbus/Makefile b/libs/libmodbus/Makefile
index 70acb00bc5..c07167c98d 100644
--- a/libs/libmodbus/Makefile
+++ b/libs/libmodbus/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libmodbus
-PKG_VERSION:=3.1.8
+PKG_VERSION:=3.1.11
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/stephane/libmodbus/releases/download/v$(PKG_VERSION)/
-PKG_HASH:=b122f2bc29f749702a22c0a760a7ca2182d541f5fa26bf25e3431f907b606f3c
+PKG_HASH:=15b4b2e0f68122c2da9b195de5c330489a9c97d40b4a95d2822378dc14d780e7
 
 PKG_MAINTAINER:=Michael Heimpold <mhei@heimpold.de>