diff --git a/v-api/src/endpoints/login/oauth/flow/device_token.rs b/v-api/src/endpoints/login/oauth/flow/device_token.rs
index f9d4161..ee608fa 100644
--- a/v-api/src/endpoints/login/oauth/flow/device_token.rs
+++ b/v-api/src/endpoints/login/oauth/flow/device_token.rs
@@ -79,6 +79,7 @@ pub struct DeviceAuthorizationResponse {
     /// The end-user verification code displayed to the user.
     pub user_code: String,
     /// The end-user verification URI on the authorization server.
+    #[serde(alias = "verification_url")]
     pub verification_uri: Url,
     /// Optional verification URI that includes the user_code.
     #[serde(default)]
@@ -92,7 +93,7 @@ pub struct DeviceAuthorizationResponse {
 }
 
 /// Body sent to the upstream provider's device authorization endpoint.
-#[derive(Serialize)]
+#[derive(Debug, Serialize)]
 struct UpstreamDeviceAuthzRequest {
     client_id: String,
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -152,6 +153,11 @@ where
         scope: Some(provider.default_scopes().join(" ")),
     };
 
+    tracing::trace!(
+        ?upstream_request,
+        "Sending device authorization request to upstream provider"
+    );
+
     let response = client
         .request(Method::POST, &device_info.remote.device_code_endpoint)
         .header(header::CONTENT_TYPE, "application/x-www-form-urlencoded")
@@ -178,8 +184,10 @@ where
     // Parse the upstream device authorization response
     let device_authz: DeviceAuthorizationResponse =
         serde_json::from_slice(&bytes).map_err(|err| {
+            let body = String::from_utf8_lossy(&bytes);
             tracing::error!(
                 ?err,
+                ?body,
                 "Failed to parse upstream device authorization response"
             );
             internal_error("Failed to parse upstream device authorization response")
diff --git a/v-api/src/endpoints/login/oauth/mod.rs b/v-api/src/endpoints/login/oauth/mod.rs
index daa3f40..b7a7b72 100644
--- a/v-api/src/endpoints/login/oauth/mod.rs
+++ b/v-api/src/endpoints/login/oauth/mod.rs
@@ -129,6 +129,10 @@ where
         let mut responses = vec![];
 
         for endpoint in self.user_info_endpoints() {
+            tracing::trace!(
+                ?endpoint,
+                "Requesting user information from OAuth provider endpoint"
+            );
             let mut request = Request::new(Method::GET, endpoint.parse().unwrap());
             self.initialize_headers(&mut request);
 
@@ -144,8 +148,10 @@ where
             tracing::trace!(?status, "Received response from OAuth provider");
 
             if !status.is_success() {
+                let body = response.text().await.unwrap_or_default();
                 tracing::error!(
                     ?status,
+                    ?body,
                     endpoint,
                     "User info endpoint returned non-success status"
                 );