diff --git a/assignment-1/Makefile b/assignment-1/Makefile
index 1b2eb43..6a94f9a 100644
--- a/assignment-1/Makefile
+++ b/assignment-1/Makefile
@@ -27,7 +27,7 @@ $(BINARY): $(SOURCES)
 		cargo build --release
 	mv target/release/assignment-1 $@
 
-$(HANDIN): $(BINARY) $(WRITEUP) Cargo.toml Cargo.lock README.md $(EXAMPLES_PNG) $(EXAMPLES_PPM)
+$(HANDIN): $(BINARY) $(WRITEUP) Makefile Cargo.toml Cargo.lock README.md $(EXAMPLES_PNG) $(EXAMPLES_PPM)
 	$(ZIP) -r $@ src examples $^
 
 examples/%.ppm: examples/%.txt