diff --git a/crates/account_sdk/src/felt_ser.rs b/crates/account_sdk/src/felt_ser.rs
index 81e6eac9..43b46205 100644
--- a/crates/account_sdk/src/felt_ser.rs
+++ b/crates/account_sdk/src/felt_ser.rs
@@ -129,9 +129,10 @@ impl<'a> ser::Serializer for &'a mut Serializer {
         Err(Error::TypeNotSupported)
     }
 
-    fn serialize_some<T: ?Sized>(self, value: &T) -> Result<()>
+    fn serialize_some<T>(self, value: &T) -> Result<()>
     where
         T: Serialize,
+        T: ?Sized,
     {
         Err(Error::TypeNotSupported)
     }
@@ -153,14 +154,15 @@ impl<'a> ser::Serializer for &'a mut Serializer {
         Err(Error::TypeNotSupported)
     }
 
-    fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<()>
+    fn serialize_newtype_struct<T>(self, name: &'static str, value: &T) -> Result<()>
     where
         T: Serialize,
+        T: ?Sized,
     {
         value.serialize(self)
     }
 
-    fn serialize_newtype_variant<T: ?Sized>(
+    fn serialize_newtype_variant<T>(
         self,
         name: &'static str,
         variant_index: u32,
@@ -169,6 +171,7 @@ impl<'a> ser::Serializer for &'a mut Serializer {
     ) -> Result<()>
     where
         T: Serialize,
+        T: ?Sized,
     {
         Err(Error::TypeNotSupported)
     }
diff --git a/crates/webauthn/tests/build.rs b/crates/webauthn/tests/build.rs
index 80fa34c8..4b14686a 100644
--- a/crates/webauthn/tests/build.rs
+++ b/crates/webauthn/tests/build.rs
@@ -27,4 +27,5 @@ fn main() {
     // It's important since we always want to test against the latest version of the code
     println!("cargo:rerun-if-changed=../auth");
     println!("cargo:rerun-if-changed=../session");
+    println!("cargo:rerun-if-changed=../../Scarb.toml");
 }
diff --git a/crates/webauthn/tests/src/auth/expand_auth_data.rs b/crates/webauthn/tests/src/auth/expand_auth_data.rs
index 143c1e0c..bdab39ff 100644
--- a/crates/webauthn/tests/src/auth/expand_auth_data.rs
+++ b/crates/webauthn/tests/src/auth/expand_auth_data.rs
@@ -1,8 +1,6 @@
-use cairo_args_runner::{errors::SierraRunnerError, Arg, Felt252};
 use proptest::{collection, prelude::*};
 
 use crate::prelude::*;
-use cairo_args_runner::SuccessfulRun;
 
 struct AuthDataParser;
 impl ArgumentParser for AuthDataParser {
diff --git a/crates/webauthn/tests/src/auth/helpers.rs b/crates/webauthn/tests/src/auth/helpers.rs
index 14c17c11..ea916572 100644
--- a/crates/webauthn/tests/src/auth/helpers.rs
+++ b/crates/webauthn/tests/src/auth/helpers.rs
@@ -1,7 +1,5 @@
 use super::*;
 use crate::*;
-use cairo_args_runner::SuccessfulRun;
-use cairo_args_runner::{errors::SierraRunnerError, Arg, Felt252};
 
 struct U256ArrParser;
 
diff --git a/crates/webauthn/tests/src/auth/mod_arithmetic.rs b/crates/webauthn/tests/src/auth/mod_arithmetic.rs
index f7e2889c..445c8c08 100644
--- a/crates/webauthn/tests/src/auth/mod_arithmetic.rs
+++ b/crates/webauthn/tests/src/auth/mod_arithmetic.rs
@@ -1,5 +1,3 @@
-use cairo_args_runner::{Arg, Felt252};
-
 use crate::prelude::*;
 
 /// ```extended_gcd(u256, u256) -> (u256, u256, u256)```
diff --git a/crates/webauthn/tests/src/auth/verify_ecdsa.rs b/crates/webauthn/tests/src/auth/verify_ecdsa.rs
index 906d01dd..8301ad0c 100644
--- a/crates/webauthn/tests/src/auth/verify_ecdsa.rs
+++ b/crates/webauthn/tests/src/auth/verify_ecdsa.rs
@@ -1,5 +1,4 @@
 use account_sdk::webauthn_signer::P256VerifyingKeyConverter;
-use cairo_args_runner::Felt252;
 use p256::{
     ecdsa::{signature::Signer, Signature, SigningKey},
     elliptic_curve::{rand_core::OsRng, SecretKey},
diff --git a/crates/webauthn/tests/src/auth/verify_signature.rs b/crates/webauthn/tests/src/auth/verify_signature.rs
index 068be783..184ed1f1 100644
--- a/crates/webauthn/tests/src/auth/verify_signature.rs
+++ b/crates/webauthn/tests/src/auth/verify_signature.rs
@@ -1,5 +1,4 @@
 use account_sdk::webauthn_signer::P256VerifyingKeyConverter;
-use cairo_args_runner::Felt252;
 use p256::{
     ecdsa::{signature::Signer, Signature, SigningKey},
     elliptic_curve::rand_core::OsRng,
diff --git a/crates/webauthn/tests/src/prop_utils.rs b/crates/webauthn/tests/src/prop_utils.rs
index a5341bd1..abe182e0 100644
--- a/crates/webauthn/tests/src/prop_utils.rs
+++ b/crates/webauthn/tests/src/prop_utils.rs
@@ -1,6 +1,5 @@
 use cairo_args_runner::Felt252;
 use proptest::prelude::*;
-use proptest::strategy::Strategy;
 
 #[derive(Debug, Clone, Copy)]
 pub struct Felt252Strategy;
diff --git a/crates/webauthn/tests/src/session/prop_signature_proofs.rs b/crates/webauthn/tests/src/session/prop_signature_proofs.rs
index b933a66d..021265be 100644
--- a/crates/webauthn/tests/src/session/prop_signature_proofs.rs
+++ b/crates/webauthn/tests/src/session/prop_signature_proofs.rs
@@ -1,6 +1,5 @@
 use cairo_args_runner::Felt252;
 use proptest::prelude::*;
-use proptest::strategy::Strategy;
 
 use crate::prop_utils::Felt252Strategy;
 use crate::session::signature_proofs::SIGNATURE_PROOFS;