diff --git a/Makefile b/Makefile
index c0ea2b20d..f14665d8c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,13 @@
-blssigs:
+all: build
+
+blssigs: lib/bls-signatures/include/libbls_signatures.h
+
+lib/bls-signatures/include/libbls_signatures.h: lib/bls-signatures/bls-signatures ;
 	./scripts/install-bls-signatures.sh
 
 deps: blssigs
-	go mod download
 
 build: deps
 	go build -o lotus ./cmd/lotus
 
-.PHONY: build deps blssigs
\ No newline at end of file
+.PHONY: all build deps