diff --git a/Cargo.toml b/Cargo.toml
index 5a88589..e26a900 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shadow-rs"
-version = "0.6.0"
+version = "0.6.2"
 authors = ["baoyachi <liaoymxsdl@gmail.com>"]
 edition = "2018"
 description = "A build-time information stored in your rust project"
diff --git a/README.md b/README.md
index 7de73bc..7cf1278 100644
--- a/README.md
+++ b/README.md
@@ -163,7 +163,7 @@ with [`clap`](https://github.com/baoyachi/shadow-rs/blob/master/example_shadow/s
 | PROJECT_NAME | shadow-rs |  
 | BUILD_TIME | 2021-06-24 21:33:59 |  
 | BUILD_TIME_2822 | Thu, 24 Jun 2021 21:33:59 +0800 |  
-| BUILD_TIME_3339 | 2021-06-24T21:33:59.972494+08:00 |  
+| BUILD_TIME_3339 | 2021-06-24T15:53:55+08:00 |  
 | BUILD_RUST_CHANNEL | debug/release |  
 
 If you have any questions, please create an [issue](https://github.com/baoyachi/shadow-rs/issues/new) so we may improve
diff --git a/src/env.rs b/src/env.rs
index e0af23d..2aecd3f 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -2,7 +2,7 @@ use crate::build::*;
 use crate::channel::*;
 use crate::err::SdResult;
 
-use chrono::Local;
+use chrono::{Local, SecondsFormat};
 use std::env;
 use std::process::Command;
 
@@ -272,7 +272,7 @@ pub fn build_time(project: &mut Project) {
         BUILD_TIME_3339,
         ConstVal {
             desc: "display project build time by rfc3399".to_string(),
-            v: time.to_rfc3339(),
+            v: time.to_rfc3339_opts(SecondsFormat::Secs, true),
             t: ConstType::Str,
         },
     );
diff --git a/src/git.rs b/src/git.rs
index 9fa8f03..c8590ec 100644
--- a/src/git.rs
+++ b/src/git.rs
@@ -1,6 +1,7 @@
 use crate::build::{ConstType, ConstVal, ShadowConst};
 use crate::ci::CiType;
 use crate::err::*;
+use chrono::SecondsFormat;
 use std::collections::HashMap;
 use std::path::Path;
 use std::process::Command;
@@ -95,7 +96,10 @@ impl Git {
 
             self.update_val(COMMIT_DATE_2822, date_time.to_rfc2822());
 
-            self.update_val(COMMIT_DATE_3339, date_time.to_rfc3339());
+            self.update_val(
+                COMMIT_DATE_3339,
+                date_time.to_rfc3339_opts(SecondsFormat::Secs, true),
+            );
 
             let author = commit.author();
             if let Some(v) = author.email() {
diff --git a/src/lib.rs b/src/lib.rs
index f55bd93..246ecc1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -32,7 +32,7 @@
 //! pub const COMMIT_AUTHOR :&str = "baoyachi";
 //! pub const BUILD_TIME :&str = "2020-08-16 13:48:52";
 //! pub const BUILD_TIME_2822 :&str = "Thu, 24 Jun 2021 21:44:14 +0800";
-//! pub const BUILD_TIME_3339 :&str = "2021-06-24T21:44:14.473058+08:00";
+//! pub const BUILD_TIME_3339 :&str = "2021-06-24T15:53:55+08:00";
 //! pub const COMMIT_DATE :&str = "2020-08-16 13:12:52";
 //! pub const COMMIT_DATE_2822 :&str = "Thu, 24 Jun 2021 21:44:14 +0800";
 //! pub const COMMIT_DATE_3339 :&str = "2021-06-24T21:44:14.473058+08:00";