diff --git a/Cargo.lock b/Cargo.lock
index 8ee4025..d925400 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -635,8 +635,8 @@ dependencies = [
 
 [[package]]
 name = "http"
-version = "0.1.2"
-source = "git+https://gitea.thegux.fr/rmanach/http#fb164ba137c3f1492f7452ac29d5d08afd30e87d"
+version = "0.1.3"
+source = "git+https://gitea.thegux.fr/rmanach/http#b8c0fbba0b62906823a79e34bb2eadc1fe419d90"
 dependencies = [
  "json",
  "lazy_static",
diff --git a/Cargo.toml b/Cargo.toml
index f43bf0d..a0dc9e1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ simple_logger = "4.0.0"
 log = "0.4.17"
 base64 = "0.13.1"
 
-http = { git = "https://gitea.thegux.fr/rmanach/http", version = "0.1.2" }
+http = { git = "https://gitea.thegux.fr/rmanach/http", version = "0.1.3" }
 
 # useful for tests (embedded files should be delete in release ?)
 #rust-embed="6.4.1"
diff --git a/src/main.rs b/src/main.rs
index 7407b1a..9b9384d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,7 +2,6 @@ mod config;
 mod jwt;
 mod router;
 mod stores;
-mod utils;
 
 use clap::Parser;
 use configparser::ini::Ini;
diff --git a/src/stores/file.rs b/src/stores/file.rs
index 3f0cb1b..f3839d0 100644
--- a/src/stores/file.rs
+++ b/src/stores/file.rs
@@ -1,5 +1,5 @@
 use async_trait::async_trait;
-use json;
+use json::JsonValue;
 use std::path::Path;
 
 use super::store::{Credentials, Store};
@@ -67,7 +67,7 @@ impl FileStore {
 
 #[async_trait]
 impl Store for FileStore {
-    async fn is_auth(&mut self, data: &json::JsonValue) -> Option<Credentials> {
+    async fn is_auth(&mut self, data: &JsonValue) -> Option<Credentials> {
         // ensure that the store file already exists even after its instanciation
         if !Path::new(&self.path).is_file() {
             log::error!("{} path referencing file store does not exist", self.path);
diff --git a/src/stores/store.rs b/src/stores/store.rs
index f034103..ec84e04 100644
--- a/src/stores/store.rs
+++ b/src/stores/store.rs
@@ -1,11 +1,11 @@
 use async_trait::async_trait;
-use json;
+use json::JsonValue;
 
-use crate::utils::extract_json_value;
+use http::extract_json_value;
 
 #[async_trait]
 pub trait Store {
-    async fn is_auth(&mut self, data: &json::JsonValue) -> Option<Credentials>;
+    async fn is_auth(&mut self, data: &JsonValue) -> Option<Credentials>;
 }
 
 #[derive(Default, Debug)]
@@ -24,11 +24,11 @@ impl Credentials {
     }
 }
 
-impl From<&json::JsonValue> for Credentials {
-    fn from(data: &json::JsonValue) -> Self {
+impl From<&JsonValue> for Credentials {
+    fn from(data: &JsonValue) -> Self {
         let mut credentials = Credentials::default();
         match data {
-            json::JsonValue::Object(ref d) => {
+            JsonValue::Object(ref d) => {
                 credentials.email = extract_json_value(&d, "email").unwrap_or("".to_string());
                 credentials.password = extract_json_value(&d, "password").unwrap_or("".to_string());
             }
@@ -41,7 +41,7 @@ impl From<&json::JsonValue> for Credentials {
 #[test]
 fn test_credentials() {
     struct Expect {
-        data: json::JsonValue,
+        data: JsonValue,
         is_empty: bool,
     }
     let test_cases: [Expect; 2] = [
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
deleted file mode 100644
index 4815b85..0000000
--- a/src/utils/mod.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-//! includes utility function, that's all !
-mod utils;
-
-pub use utils::extract_json_value;
diff --git a/src/utils/utils.rs b/src/utils/utils.rs
deleted file mode 100644
index e330062..0000000
--- a/src/utils/utils.rs
+++ /dev/null
@@ -1,30 +0,0 @@
-use json::object::Object;
-
-/// extracts JSON value from a key
-pub fn extract_json_value(data: &Object, key: &str) -> Option<String> {
-    match data.get(key) {
-        Some(u) => match u.as_str() {
-            Some(s) => return Some(s.to_string()),
-            None => None,
-        },
-        None => None,
-    }
-}
-
-#[test]
-fn test_extract_json_value() {
-    let test_cases: [(json::JsonValue, bool, bool); 3] = [
-        (json::parse(r#"{"test": ""}"#).unwrap(), true, true),
-        (json::parse(r#"{}"#).unwrap(), true, false),
-        (json::parse(r#"[]"#).unwrap(), false, false),
-    ];
-
-    for (value, is_valid, has_key) in test_cases {
-        match value {
-            json::JsonValue::Object(d) => {
-                assert_eq!(has_key, extract_json_value(&d, "test").is_some());
-            }
-            _ => assert!(!is_valid),
-        }
-    }
-}