diff --git a/bench/Cargo.toml b/bench/Cargo.toml
index 37a6781..b37bcab 100644
--- a/bench/Cargo.toml
+++ b/bench/Cargo.toml
@@ -2,7 +2,6 @@
 name = "num-prime-bench"
 version = "0.0.0"
 edition.workspace = true
-rust-version.workspace = true
 publish = false
 
 [[bench]]