diff --git a/native/rhai_rustler/Cargo.lock b/native/rhai_rustler/Cargo.lock
index f45ee7b..da91c87 100644
--- a/native/rhai_rustler/Cargo.lock
+++ b/native/rhai_rustler/Cargo.lock
@@ -167,9 +167,9 @@ checksum = "53a49587ad06b26609c52e423de037e7f57f20d53535d66e08c695f347df952a"
 
 [[package]]
 name = "rhai"
-version = "1.20.1"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0277a46f29fe3b3eb10821ca2c65a4751b686b6c84422aae31695ba167b0fbc"
+checksum = "ce4d759a4729a655ddfdbb3ff6e77fb9eadd902dae12319455557796e435d2a6"
 dependencies = [
  "ahash",
  "bitflags",
diff --git a/native/rhai_rustler/Cargo.toml b/native/rhai_rustler/Cargo.toml
index a7f2e48..0dbd8b5 100644
--- a/native/rhai_rustler/Cargo.toml
+++ b/native/rhai_rustler/Cargo.toml
@@ -10,7 +10,7 @@ path = "src/lib.rs"
 crate-type = ["cdylib"]
 
 [dependencies]
-rhai = { version = "=1.20.1", features = ["sync"] }
+rhai = { version = "=1.21.0", features = ["sync"] }
 rhai-dylib = { version = "0.4.0", features = ["sync"] }
 thiserror = "2.0.9"
 rustler = "0.36.0"