diff --git a/Cargo.toml b/Cargo.toml
index 05edacf..413f55a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,8 +16,6 @@ anyhow = "1.0.75"
 async-trait = "0.1.73"
 base64 = "0.21.4"
 http = "1.1.0"
-# NOTE: ssi-jwk uses syntax_json, but does not use the `serde_json` feature for serialization/deserialization.
-json-syntax = { version = "0.12.5", features = ["serde_json"] }
 jsonpath_lib = "0.3.0"
 jsonschema = "0.18.0"
 oid4vp-frontend = { version = "0.1.0", path = "oid4vp-frontend" }
@@ -27,7 +25,7 @@ reqwest = { version = "0.12.5", features = ["rustls-tls"] }
 serde = "1.0.188"
 serde_json = "1.0.107"
 serde_urlencoded = "0.7.1"
-ssi = { version = "0.8.1", features = ["secp256r1"] }
+ssi = { version = "0.9", features = ["secp256r1"] }
 tokio = "1.32.0"
 tracing = "0.1.37"
 url = { version = "2.4.1", features = ["serde"] }
@@ -43,3 +41,6 @@ uuid = { version = "1.2", features = ["v4", "serde", "js"] }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 uuid = { version = "1.2", features = ["v4", "serde"] }
+
+[patch.crates-io]
+ssi = { git = "https://github.com/spruceid/ssi.git" }
diff --git a/src/verifier/request_signer.rs b/src/verifier/request_signer.rs
index 9ea00a4..ed06492 100644
--- a/src/verifier/request_signer.rs
+++ b/src/verifier/request_signer.rs
@@ -1,7 +1,7 @@
 use anyhow::Result;
 use async_trait::async_trait;
 use p256::ecdsa::{signature::Signer, Signature, SigningKey};
-use ssi::claims::jws::{JWSSigner, JWSSignerInfo};
+use ssi::claims::jws::{JwsSigner, JwsSignerInfo};
 use ssi::jwk::Algorithm;
 
 use ssi::jwk::JWK;
@@ -65,13 +65,13 @@ impl RequestSigner for P256Signer {
     }
 }
 
-impl JWSSigner for P256Signer {
-    async fn fetch_info(&self) -> std::result::Result<JWSSignerInfo, ssi::claims::SignatureError> {
+impl JwsSigner for P256Signer {
+    async fn fetch_info(&self) -> std::result::Result<JwsSignerInfo, ssi::claims::SignatureError> {
         let algorithm = self.jwk.algorithm.unwrap_or(Algorithm::ES256);
 
         let key_id = self.jwk.key_id.clone();
 
-        Ok(JWSSignerInfo { algorithm, key_id })
+        Ok(JwsSignerInfo { algorithm, key_id })
     }
 
     async fn sign_bytes(