diff --git a/Cargo.toml b/Cargo.toml
index 4ad9e5c..1e12c10 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "actix-casbin"
-version = "0.3.3"
+version = "0.4.0"
 authors = ["Eason Chai <hackerchai.com@gmail.com>","Cheng JIANG <jiang.cheng@vip.163.com>"]
 edition = "2018"
 license = "Apache-2.0"
diff --git a/README.md b/README.md
index a53478d..2068bdb 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 Add it to `Cargo.toml`
 
 ```rust
-actix-casbin = "0.3.3"
+actix-casbin = "0.4.0"
 actix-rt = "1.1.1"
 ```