diff --git a/makefile b/makefile
index 7b2b6c0..8c7d050 100644
--- a/makefile
+++ b/makefile
@@ -39,7 +39,7 @@ clean:
 	rm -rf $(BUILDDIR)/*
 
 deps:
-	pip install -r requirements.txt
+	pip install -r requirements.txt --upgrade
 
 test: build
 	$(TEST_CMD)