diff --git a/src/ontology/mondo.Makefile b/src/ontology/mondo.Makefile
index 45aa1db667..4f3123d3ad 100644
--- a/src/ontology/mondo.Makefile
+++ b/src/ontology/mondo.Makefile
@@ -638,6 +638,35 @@ release_diff: reports/mondo_release_diff.md
 all: reports/mondo_release_diff.md
 all: reports/mondo_obsoletioncandidates.tsv
 
+##################
+### KGCL Diff ####
+##################
+
+KGCL_ONTOLOGY=mondo-base.obo
+
+all: kgcl-diff
+
+.PHONY: kgcl-diff
+kgcl-diff: kgcl-diff-release-base
+
+.PHONY: kgcl-diff-release-base
+kgcl-diff-release-base: reports/difference_release_base.yaml \
+						reports/difference_release_base.tsv \
+						reports/difference_release_base.md
+
+tmp/mondo-released.obo: .FORCE
+	wget http://purl.obolibrary.org/obo/mondo/$(KGCL_ONTOLOGY) -O $@
+
+reports/difference_release_base.md: tmp/mondo-released.obo $(KGCL_ONTOLOGY)
+	runoak -i simpleobo:tmp/mondo-released.obo diff -X simpleobo:$(KGCL_ONTOLOGY) -o $@ --output-type md
+
+reports/difference_release_base.tsv: tmp/mondo-released.obo $(KGCL_ONTOLOGY)
+	runoak -i simpleobo:tmp/mondo-released.obo diff -X simpleobo:$(KGCL_ONTOLOGY) \
+	-o $@ --output-type csv --statistics --group-by-property oio:hasOBONamespace
+
+reports/difference_release_base.yaml: tmp/mondo-released.obo $(KGCL_ONTOLOGY)
+	runoak -i simpleobo:tmp/mondo-released.obo diff -X simpleobo:$(KGCL_ONTOLOGY) -o $@ --output-type yaml
+
 ###########################
 ## MONDO VIEW GENERATION ##
 ###########################