diff --git a/crates/bindings-typescript/src/sdk/db_connection_impl.ts b/crates/bindings-typescript/src/sdk/db_connection_impl.ts
index 1991ce0cbdf..cace1274f4c 100644
--- a/crates/bindings-typescript/src/sdk/db_connection_impl.ts
+++ b/crates/bindings-typescript/src/sdk/db_connection_impl.ts
@@ -97,6 +97,22 @@ export type DbConnectionConfig<RemoteModule extends UntypedRemoteModule> = {
 
 type ProcedureCallback = (result: ProcedureResultMessage['result']) => void;
 
+type Deferred<T> = {
+  promise: Promise<T>;
+  resolve: (value: T | PromiseLike<T>) => void;
+  reject: (reason?: unknown) => void;
+};
+
+function createDeferred<T>(): Deferred<T> {
+  let resolve!: (value: T | PromiseLike<T>) => void;
+  let reject!: (reason?: unknown) => void;
+  const promise = new Promise<T>((res, rej) => {
+    resolve = res;
+    reject = rej;
+  });
+  return { promise, resolve, reject };
+}
+
 export class DbConnectionImpl<RemoteModule extends UntypedRemoteModule>
   implements DbContext<RemoteModule>
 {
@@ -820,7 +836,7 @@ export class DbConnectionImpl<RemoteModule extends UntypedRemoteModule>
     argsBuffer: Uint8Array,
     reducerArgs?: object
   ): Promise<void> {
-    const { promise, resolve, reject } = Promise.withResolvers<void>();
+    const { promise, resolve, reject } = createDeferred<void>();
     const requestId = this.#getNextRequestId();
     const message = ClientMessage.CallReducer({
       reducer: reducerName,
@@ -884,7 +900,7 @@ export class DbConnectionImpl<RemoteModule extends UntypedRemoteModule>
     procedureName: string,
     argsBuffer: Uint8Array
   ): Promise<Uint8Array> {
-    const { promise, resolve, reject } = Promise.withResolvers<Uint8Array>();
+    const { promise, resolve, reject } = createDeferred<Uint8Array>();
     const requestId = this.#getNextRequestId();
     const message = ClientMessage.CallProcedure({
       procedure: procedureName,