diff --git a/Cargo.toml b/Cargo.toml
index 987b840..7cb0905 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,3 +13,6 @@ repository = "https://github.com/kingwingfly/encrypt-config"
 [workspace.dependencies]
 encrypt_config = { path = "encrypt-config", version = "^0.0.1-alpha3" }
 encrypt_config_derive = { path = "encrypt-config-derive", version = "^0.0.1-alpha3" }
+
+[profile.dev]
+opt-level = 3