diff --git a/implementations/rust/Makefile b/implementations/rust/Makefile
index 684eb45..4b61f80 100644
--- a/implementations/rust/Makefile
+++ b/implementations/rust/Makefile
@@ -5,6 +5,7 @@ watch:
 bench: benches/testdata.bin
 	cargo bench --benches
 
+.INTERMEDIATE: benches/testdata.bin
 benches/testdata.bin: benches/testdata.bin.gz
 	gzip -dc $< > $@