diff --git a/Makefile b/Makefile
index 2e85c0e..80084bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,13 @@
 help:
-	@echo "make help    Displays help"
-	@echo "     build   Builds the image"
-	@echo "     upload  Builds and uploads the image"
+	@echo "make help         Displays help"
+	@echo "     build        Builds the image"
+	@echo "     upload       Builds and uploads the image"
+	@echo "     prune-cache  Prunes the entire build cache"
 build:
 	docker buildx build -t git.staropensource.de/staropensource/actions-docker:latest -f Dockerfile .
 	docker buildx build -t git.staropensource.de/staropensource/actions-docker:java -f Dockerfile.java .
 upload: build
 	docker push git.staropensource.de/staropensource/actions-docker:latest
 	docker push git.staropensource.de/staropensource/actions-docker:java
+prune-cache:
+	docker buildx prune -af