diff --git a/Makefile b/Makefile
index 60083d2..5935ca1 100644
--- a/Makefile
+++ b/Makefile
@@ -16,8 +16,12 @@ permissions: build
 	find $(BUILDDIR) -type f -exec chmod 0644 {} \;
 	find $(BUILDDIR) -type d -exec chmod 0755 {} \;
 
-build:
-	lektor build -O $(BUILDDIR)
+build: venv
+	. ./venv/bin/activate && lektor build -O $(BUILDDIR)
 
 clean:
 	rm -rf $(BUILDDIR)
+
+venv: requirements.txt
+	python3 -m venv venv
+	sh -c ". ./venv/bin/activate && pip install -r requirements.txt"
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..58717e8
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+lektor