diff --git a/Makefile b/Makefile
index edb4c61..1b23420 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ watch:
 	cargo watch -x clippy
 
 check:
-	cargo test --all
+	cargo test --all --release
 
 # run these in release mode because the reason they're ignored is usually that
 # they take a long time to run