diff --git a/package/rng-tools/rng-tools.mk b/package/rng-tools/rng-tools.mk
index 347d89d7f3..e997b151c0 100644
--- a/package/rng-tools/rng-tools.mk
+++ b/package/rng-tools/rng-tools.mk
@@ -4,9 +4,11 @@
 #
 #############################################################
 
-RNG_TOOLS_VERSION = 3
+RNG_TOOLS_VERSION = 4
 RNG_TOOLS_SITE = http://downloads.sourceforge.net/project/gkernel/rng-tools/$(RNG_TOOLS_VERSION)
 RNG_TOOLS_CONF_ENV = LIBS="-largp"
 RNG_TOOLS_DEPENDENCIES = argp-standalone
+RNG_TOOLS_LICENSE = GPLv2
+RNG_TOOLS_LICENSE_FILES = COPYING
 
 $(eval $(autotools-package))