diff --git a/Makefile b/Makefile
index cbfe3a7..d564a3c 100644
--- a/Makefile
+++ b/Makefile
@@ -103,6 +103,13 @@ scrut: build/bin/scrut
 build/bin/scrut: src/scrut.c build
 	$(CC) $(CFLAGS) -o $@ src/scrut.c
 
+.PHONY: sleep
+sleep: build/bin/sleep
+build/bin/sleep: src/sleep.rs build
+	$(RUSTC) $(RUSTFLAGS)
+		--extern sysexits=build/o/libsysexits.rlib \
+		-o $@ src/sleep.rs
+
 .PHONY: str
 str: build/bin/str
 build/bin/str: src/str.c build