diff --git a/Makefile b/Makefile
index 967a4c9..0436ec9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,16 @@
+BUNDLE := $(if $(shell command -v bundle2.7),bundle2.7,bundle)
 export BUNDLE_PATH ?= $(CURDIR)/.bundle/gems
 
 .PHONY: build
 build: .bundle/.done
-	bundle exec jekyll build --drafts
+	$(BUNDLE) exec jekyll build --drafts
 
 .PHONY: serve
 serve: .bundle/.done
-	bundle exec jekyll serve --drafts --livereload
+	$(BUNDLE) exec jekyll serve --drafts --livereload
 
 .bundle/.done: Gemfile
-	bundle install
+	$(BUNDLE) install
 	touch $@
 
 .PHONY: clean