diff --git a/Makefile b/Makefile
index a58ea9dc..3010c0c9 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ build :
 
 .PHONY : watch
 watch :
-	@dune build --only-packages $(PACKAGES) --no-print-directory -w
+	@dune build --only-packages $(PACKAGES) --no-print-directory @install -w
 
 .PHONY : deps
 deps :