diff --git a/Makefile b/Makefile
index 780df9b..fcf4e51 100644
--- a/Makefile
+++ b/Makefile
@@ -11,4 +11,4 @@ push: build
 
 .PHONY: build
 build:
-	docker build -t ${IMAGE}:${TAG} .
+	docker build --pull -t ${IMAGE}:${TAG} .