diff --git a/Makefile b/Makefile
index 677a525e0..da0778bc0 100644
--- a/Makefile
+++ b/Makefile
@@ -37,8 +37,10 @@ reset:
 
 _update:
 	@cask update 2>&1
+	@rm -f bootstrap.elc
 
 _install:
 	@cask install 2>&1
+	@rm -f bootstrap.elc
 
 .PHONY: all