diff --git a/bindings/Makefile b/bindings/Makefile
index 3f4a8b89..dee75187 100644
--- a/bindings/Makefile
+++ b/bindings/Makefile
@@ -19,6 +19,7 @@ build:
 	$(MAKE) -C python gen_const
 	$(MAKE) -C go gen_const
 	$(MAKE) -C java gen_const
+	$(MAKE) -C ruby gen_const
 	python const_generator.py dotnet
 
 install: build