diff --git a/Cargo.toml b/Cargo.toml
index e571dc48..7678fb27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,7 @@ name = "rhai"
 version = "1.8.0"
 rust-version = "1.60.0"
 edition = "2018"
+resolver = "2"
 authors = ["Jonathan Turner", "Lukáš Hozda", "Stephen Chung", "jhwgh1968"]
 description = "Embedded scripting for Rust"
 homepage = "https://rhai.rs"