diff --git a/examples/src/example-nosrc.mk b/examples/src/example-nosrc.mk
index b748bc9a..0e67dc6d 100644
--- a/examples/src/example-nosrc.mk
+++ b/examples/src/example-nosrc.mk
@@ -32,7 +32,7 @@ local_drafting_ttl := $(wildcard drafting.ttl)
 ifeq ($(local_drafting_ttl),)
 local_drafting_validation_flag :=
 else
-local_drafting_validation_flag := --ontology-graph $(wildcard drafting.ttl)
+local_drafting_validation_flag := --ontology-graph $(wildcard drafting.ttl) --review-tbox
 endif
 
 all: \
diff --git a/requirements.txt b/requirements.txt
index 1afbf7df..a3fa56bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 SPARQLWrapper
-case-utils >=0.11.0,<0.12.0
+case-utils >=0.13.0,<0.14.0
 pytest