diff --git a/src/matrix/registration/Registration.ts b/src/matrix/registration/Registration.ts
index 1432f41a..312c442b 100644
--- a/src/matrix/registration/Registration.ts
+++ b/src/matrix/registration/Registration.ts
@@ -34,7 +34,6 @@ export class Registration {
     private _hsApi: HomeServerApi;
     private _data: RegistrationParameters;
     private _firstStage: BaseRegistrationStage;
-    private _session: string;
 
     constructor(hsApi: HomeServerApi, data: RegistrationParameters) {
         this._hsApi = hsApi;
@@ -58,7 +57,7 @@ export class Registration {
     }
 
     parseStagesFromResponse(response: RegistrationResponse) {
-        this._session = response.session;
+        const { session, params } = response;
         const flow = response.flows.pop();
         let lastStage: BaseRegistrationStage;
         for (const stage of flow.stages) {
@@ -66,7 +65,7 @@ export class Registration {
             if (!stageClass) {
                 throw new Error("Unknown stage");
             }
-            const registrationStage = new stageClass(this._hsApi, this._data, this._session);
+            const registrationStage = new stageClass(this._hsApi, this._data, session, params?.[stage]);
             if (!this._firstStage) {
                 this._firstStage = registrationStage;
                 lastStage = registrationStage;
diff --git a/src/matrix/registration/stages/BaseRegistrationStage.ts b/src/matrix/registration/stages/BaseRegistrationStage.ts
index 51115974..1458c554 100644
--- a/src/matrix/registration/stages/BaseRegistrationStage.ts
+++ b/src/matrix/registration/stages/BaseRegistrationStage.ts
@@ -26,11 +26,13 @@ export abstract class BaseRegistrationStage {
     protected _registrationData: RegistrationParameters;
     protected _session: string;
     protected _nextStage: BaseRegistrationStage;
+    protected _params?: Record<string, any>
 
-    constructor(hsApi: HomeServerApi, registrationData: RegistrationParameters, session: string) {
+    constructor(hsApi: HomeServerApi, registrationData: RegistrationParameters, session: string, params?: Record<string, any>) {
         this._hsApi = hsApi;
         this._registrationData = registrationData;
         this._session = session;
+        this._params = params;
     }
 
     /**