diff --git a/GNUmakefile b/GNUmakefile
index f36870e98..17f0ea51e 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -110,6 +110,8 @@ vpath %.tl teal-src/
 	tl -I teal-src/ --gen-compat off --gen-target 5.1 gen $^ -o $@
 	-lua-format -i $@
 
+teal: util/jsonschema.lua util/datamapper.lua
+
 util/%.so:
 	$(MAKE) install -C util-src