Add a version requirement for rand_macros
diff --git a/Cargo.toml b/Cargo.toml
index c27e052..b1fea9c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,3 +19,4 @@
 
 [dev-dependencies.rand_macros]
 path = "rand_macros"
+version = "*"