diff --git a/net/knot/Makefile b/net/knot/Makefile
index fa32c6554..0ed810f04 100644
--- a/net/knot/Makefile
+++ b/net/knot/Makefile
@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=knot
-PKG_VERSION:=1.6.3
+PKG_VERSION:=1.6.4
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://secure.nic.cz/files/knot-dns/
-PKG_MD5SUM:=fb744b50493ac7e724d5228ade2e35b1
+PKG_MD5SUM:=a8ac2be2dc7d22c6df1aa5387ae4096b
 
 PKG_MAINTAINER:=Daniel Salzman <daniel.salzman@nic.cz>
 PKG_LICENSE:=GPL-2.0+