diff --git a/ext/psych/depend b/ext/psych/depend
index 90039ea2a6..4947822c78 100644
--- a/ext/psych/depend
+++ b/ext/psych/depend
@@ -1,4 +1,12 @@
-$(OBJS): $(YAML_H)
+$(TARGET_SO): $(LIBYAML)
+
+libyaml $(LIBYAML):
+	cd libyaml && $(MAKE)
+clean-so::
+	-cd libyaml && $(MAKE) clean
+distclean-so::
+	-cd libyaml && $(MAKE) distclean
+	-$(Q)$(RMDIRS) libyaml/* libyaml
 
 # AUTOGENERATED DEPENDENCIES START
 psych.o: $(RUBY_EXTCONF_H)