diff --git a/README.md b/README.md
index bdf2b0f..82cc1b5 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ provide a featured web framework
  - [x] everything of axum
  - [ ] automatically swagger api generation
  - [x] built-in message mechanism
- - [x] environment based configuration system, support environment resolver `${ANY_ENV_VAR}` and path variable `${app.database.name}` powered by [yaac](https://crates.io/crates/yaac)
+ - [x] environment based configuration system, support environment resolver `${ANY_ENV_VAR}` and path variable `${app.database.name}` powered by [mofa](https://crates.io/crates/mofa)
  - [x] logging system
  - [x] opt-in prometheus integration
  - [x] task system with interval and cron
diff --git a/gotcha/Cargo.toml b/gotcha/Cargo.toml
index 91716ae..2bb7c14 100644
--- a/gotcha/Cargo.toml
+++ b/gotcha/Cargo.toml
@@ -35,7 +35,7 @@ cron = {version = "0.12.0", optional = true}
 chrono = "0.4.23"
 http = "0.2"
 oas = { version = "0.1", optional = true }
-yaac = "0.1"
+mofa = "0.1"
 axum = {version = "0.7", default-features = false, features = ["form", "json", "query"]}
 tower-layer = "0.3.2"
 tower-service = "0.3.2"
diff --git a/gotcha/src/config.rs b/gotcha/src/config.rs
index 79c25a2..03dd091 100644
--- a/gotcha/src/config.rs
+++ b/gotcha/src/config.rs
@@ -3,7 +3,7 @@ use std::str::FromStr;
 
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize};
-use yaac::{ConfigLoader, EnvironmentSource, FileSource};
+use mofa::{ConfigLoader, EnvironmentSource, FileSource};
 
 use crate::error::GotchaError;