diff --git a/.mutant.yml b/.mutant.yml
new file mode 100644
index 0000000..9d94d75
--- /dev/null
+++ b/.mutant.yml
@@ -0,0 +1,7 @@
+integration:
+  name: minitest
+requires:
+- project_management
+matcher:
+  subjects:
+  - ProjectManagement*
diff --git a/Makefile b/Makefile
index 0805338..ff39b0a 100644
--- a/Makefile
+++ b/Makefile
@@ -19,17 +19,13 @@ $(addprefix test_, $(EXAMPLES)):
 
 $(addprefix mutate_, $(EXAMPLES)):
 	@bundle exec mutant run \
-		--include $(subst mutate_,,$@)/lib \
-		--require project_management \
-		--use minitest "ProjectManagement*"
+		--include $(subst mutate_,,$@)/lib
 
 mutate_extracted_state:
 	@bundle exec mutant run --include test \
 		--include extracted_state/lib \
-		--require project_management \
 		--ignore-subject "ProjectManagement::Issue#apply_on_state" \
-		--ignore-subject "ProjectManagement::Issue#apply" \
-		--use minitest "ProjectManagement*"
+		--ignore-subject "ProjectManagement::Issue#apply"
 
 show_ui:
 	@bundle exec ruby ui/duck_typing_ui.rb