diff --git a/Cargo.toml b/Cargo.toml
index cb4d121..6e96d91 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ version = "1.0"
 [dependencies.syn]
 version = "1.0"
 [dev-dependencies.rustversion]
-version = "0.1"
+version = "1.0"
 
 [dev-dependencies.serde]
 version = "1.0"