diff --git a/package/gmp/Makefile b/package/gmp/Makefile
index e813284800..978f7db3d9 100644
--- a/package/gmp/Makefile
+++ b/package/gmp/Makefile
@@ -9,12 +9,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gmp
-PKG_VERSION:=4.1.4
+PKG_VERSION:=4.2.1
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=@GNU/gmp
-PKG_MD5SUM:=0aa7d3b3f5b5ec5951e7dddd6f65e891
+PKG_MD5SUM:=091c56e0e1cca6b09b17b69d47ef18e3
 
 include $(INCLUDE_DIR)/package.mk