--- Makefile.orig	2016-08-11 13:49:47 UTC
+++ Makefile
@@ -3,7 +3,7 @@ EXTVERSION   = $(shell grep default_vers
 TESTS        = $(wildcard test/sql/*.sql)
 REGRESS      = $(patsubst test/sql/%.sql,%,$(TESTS))
 REGRESS_OPTS = --inputdir=test
-DOCS         = $(wildcard doc/*.md)
+DOCS         = $(wildcard doc/*.md) $(wildcard *LICENSE)
 MODULES      = $(patsubst %.c,%,$(wildcard *.c))
 PG_CONFIG    ?= pg_config