diff --git a/endpoint/Cargo.lock b/endpoint/Cargo.lock
index a5de785..62b7b71 100644
--- a/endpoint/Cargo.lock
+++ b/endpoint/Cargo.lock
@@ -85,7 +85,7 @@ checksum = "648ed8c8d2ce5409ccd57453d9d1b214b342a0d69376a6feda1fd6cae3299308"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -96,7 +96,7 @@ checksum = "061a7acccaa286c011ddc30970520b98fa40e00c9d644633fb26b5fc63a265e3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -316,7 +316,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -327,7 +327,7 @@ checksum = "72c41b3b7352feb3211a0d743dc5700a4e3b60f51bd2b368892d1e0f9a95f44b"
 dependencies = [
  "darling_core",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -371,7 +371,7 @@ dependencies = [
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -501,7 +501,7 @@ checksum = "6dbd947adfffb0efc70599b3ddcf7b5597bb5fa9e245eb99f62b3a5f7bb8bd3c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -757,21 +757,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
 
-[[package]]
-name = "jsonwebkey"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c57c852b14147e2bd58c14fde40398864453403ef632b1101db130282ee6e2cc"
-dependencies = [
- "base64 0.13.0",
- "bitflags",
- "generic-array",
- "serde",
- "serde_json",
- "thiserror",
- "zeroize",
-]
-
 [[package]]
 name = "jsonwebtoken"
 version = "9.1.0"
@@ -1051,7 +1036,6 @@ dependencies = [
  "base64 0.13.0",
  "chrono",
  "either",
- "jsonwebkey",
  "jsonwebtoken",
  "lambda-web",
  "lazy_static",
@@ -1087,7 +1071,7 @@ dependencies = [
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1183,7 +1167,7 @@ checksum = "4bf29726d67464d49fa6224a1d07936a8c08bb3fba727c7493f6cf1616fdaada"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
  "version_check",
  "yansi",
 ]
@@ -1253,7 +1237,7 @@ checksum = "4c38e3aecd2b21cb3959637b883bb3714bc7e43f0268b9a29d3743ee3e55cdd2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1354,7 +1338,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rocket_http",
- "syn 1.0.85",
+ "syn",
  "unicode-xid",
 ]
 
@@ -1411,7 +1395,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rocket_http",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1491,7 +1475,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1523,7 +1507,7 @@ checksum = "ed201699328568d8d08208fdd080e3ff594e6c422e438b6705905da01005d537"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1534,7 +1518,7 @@ checksum = "85bf8229e7920a9f636479437026331ce11aa132b4dde37d121944a44d6e5f3c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1684,17 +1668,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "syn"
-version = "2.0.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "tempfile"
 version = "3.3.0"
@@ -1726,7 +1699,7 @@ checksum = "5420d42e90af0c38c3290abcca25b9b3bdf379fc9f55c528f53a269d9c9a267e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1817,7 +1790,7 @@ checksum = "b557f72f448c511a979e2564e55d74e6c4432fc96ff4f6241bc6bded342643b7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -1894,7 +1867,7 @@ checksum = "f4f480b8f81512e825f337ad51e94c1eb5d3bbdf2b363dcd01e2b19a9ffe3f8e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.85",
+ "syn",
 ]
 
 [[package]]
@@ -2254,17 +2227,3 @@ name = "zeroize"
 version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "12a3946ecfc929b583800f4629b6c25b88ac6e92a40ea5670f77112a85d40a8b"
-dependencies = [
- "zeroize_derive",
-]
-
-[[package]]
-name = "zeroize_derive"
-version = "1.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.39",
-]
diff --git a/endpoint/Cargo.toml b/endpoint/Cargo.toml
index 2369ddb..5181abb 100644
--- a/endpoint/Cargo.toml
+++ b/endpoint/Cargo.toml
@@ -25,8 +25,6 @@ base64 = "0.13"
 url = { version = "2.4.1", features = ["serde"] }
 rsa = { version = "0.9.2", features = ["pem", "sha2"] }
 rand = "0.8.5"
-jsonwebkey = "0.3.5"
-
 
 [dependencies.lambda-web]
 version = "0.1.8"
diff --git a/endpoint/src/auth.rs b/endpoint/src/auth.rs
index 786b7b7..b4326ab 100644
--- a/endpoint/src/auth.rs
+++ b/endpoint/src/auth.rs
@@ -131,10 +131,6 @@ impl<'r> FromRequest<'r> for UserToken {
         req: &'r Request<'_>,
     ) -> request::Outcome<Self, status::Custom<UserTokenError>> {
         if let Some(authen_header) = req.headers().get_one("Authorization") {
-            println!(
-                "request state: {:?}",
-                req.rocket().state::<KeyPair>().unwrap()
-            );
             let authen_str = authen_header.to_string();
             if authen_str.starts_with("Bearer") {
                 let token = authen_str[6..authen_str.len()].trim();
@@ -157,8 +153,6 @@ impl<'r> FromRequest<'r> for UserToken {
     }
 }
 
-// const MY_NOT_SO_SECRET_KEY: &[u8; 8] = b"abcdefgh";
-
 pub fn generate_keys() -> KeyPair {
     let mut rng = rand::thread_rng();
 
diff --git a/endpoint/src/main.rs b/endpoint/src/main.rs
index 5fee9cd..d07c5ed 100644
--- a/endpoint/src/main.rs
+++ b/endpoint/src/main.rs
@@ -77,6 +77,7 @@ fn openid_configuration() -> Json<OpenIdConfiguration> {
     Json(openid_conf)
 }
 
+/// endpoint to retrieve the Json Web Key Set to verify the token's signature
 #[get("/2/jwks")]
 fn jwks(state: &State<KeyPair>) -> Json<JwkSet> {
     let pub_key: RsaPublicKey =
@@ -585,10 +586,7 @@ fn post_auth_action_test() {
 
 #[test]
 fn verify_token_signature_test() {
-    use jsonwebtoken::decode;
-    use jsonwebtoken::Algorithm;
-    use jsonwebtoken::DecodingKey;
-    use jsonwebtoken::Validation;
+    use jsonwebtoken::{decode, Algorithm, DecodingKey, Validation};
     use std::collections::HashSet;
 
     let client = &Client::tracked(create_server()).unwrap();