diff --git a/contrib/src/restbed/SHA512SUMS b/contrib/src/restbed/SHA512SUMS
new file mode 100644
index 0000000000000000000000000000000000000000..0c4be3b9a078d846a7eddf7cdb6dc60b77eecdcc
--- /dev/null
+++ b/contrib/src/restbed/SHA512SUMS
@@ -0,0 +1 @@
+4262260c0b740e0be1c42e59e1680ab664b9e5b8f07e354b2bc66a7cdf29d738997011687689b3a25fdf365ddcb7861c8b9b0642053b7f5e956142973abfe6f5  restbed-4.0.tar.gz
diff --git a/contrib/src/restbed/rules.mak b/contrib/src/restbed/rules.mak
index cb69fe91abf7510a72ca9af3ee3ac339f9ab7fce..b27e42cae8a34041b8c2a67562251598b5d174a8 100644
--- a/contrib/src/restbed/rules.mak
+++ b/contrib/src/restbed/rules.mak
@@ -47,3 +47,5 @@ restbed: restbed-$(RESTBED_VERSION).tar.gz
 	cd $< && cmake $(RESTBED_CONF) .
 	cd $< && $(MAKE) install
 	touch $@
+
+.sum-restbed: restbed-$(RESTBED_VERSION).tar.gz
\ No newline at end of file