diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab8a78cfc..e0088dd60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 All notable changes to the Aptos TypeScript SDK will be captured in this file. This changelog is written by hand for now. It adheres to the format set out by [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 # Unreleased
+- Add support for Firebase issuers in the `updateFederatedKeylessJwkSetTransaction` function
 
 # 1.32.0 (2024-11-08)
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 1d4258839..dcae276de 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -141,6 +141,7 @@ these commands.
 ```bash
 git checkout "bump_version"
 // update version in `package.json`
+// update CHANGELOG.md
 pnpm update-version
 ```
 
diff --git a/src/internal/keyless.ts b/src/internal/keyless.ts
index 5485fc762..d02545dbc 100644
--- a/src/internal/keyless.ts
+++ b/src/internal/keyless.ts
@@ -31,6 +31,7 @@ import { MoveVector } from "../bcs";
 import { generateTransaction } from "./transactionSubmission";
 import { InputGenerateTransactionOptions, SimpleTransaction } from "../transactions";
 import { KeylessError, KeylessErrorType } from "../errors";
+import { FIREBASE_AUTH_ISS_PATTERN } from "../utils/const";
 
 /**
  * Retrieves a pepper value based on the provided configuration and authentication details.
@@ -232,7 +233,16 @@ export async function updateFederatedKeylessJwkSetTransaction(args: {
   options?: InputGenerateTransactionOptions;
 }): Promise<SimpleTransaction> {
   const { aptosConfig, sender, iss, options } = args;
-  const jwksUrl = args.jwksUrl ?? (iss.endsWith("/") ? `${iss}.well-known/jwks.json` : `${iss}/.well-known/jwks.json`);
+
+  let { jwksUrl } = args;
+
+  if (jwksUrl === undefined) {
+    if (FIREBASE_AUTH_ISS_PATTERN.test(iss)) {
+      jwksUrl = "https://www.googleapis.com/service_accounts/v1/jwk/securetoken@system.gserviceaccount.com";
+    } else {
+      jwksUrl = iss.endsWith("/") ? `${iss}.well-known/jwks.json` : `${iss}/.well-known/jwks.json`;
+    }
+  }
 
   let response: Response;
 
diff --git a/src/utils/const.ts b/src/utils/const.ts
index 05ae5c2a6..d1641d695 100644
--- a/src/utils/const.ts
+++ b/src/utils/const.ts
@@ -65,3 +65,10 @@ export enum ProcessorType {
   USER_TRANSACTION_PROCESSOR = "user_transaction_processor",
   OBJECT_PROCESSOR = "objects_processor",
 }
+
+/**
+ * Regular expression pattern for Firebase Auth issuer URLs
+ * Matches URLs in the format: https://securetoken.google.com/[project-id]
+ * where project-id can contain letters, numbers, hyphens, and underscores
+ */
+export const FIREBASE_AUTH_ISS_PATTERN = /^https:\/\/securetoken\.google\.com\/[a-zA-Z0-9-_]+$/;
diff --git a/tests/e2e/api/keyless.test.ts b/tests/e2e/api/keyless.test.ts
index 723f8017e..f7e06d903 100644
--- a/tests/e2e/api/keyless.test.ts
+++ b/tests/e2e/api/keyless.test.ts
@@ -101,6 +101,24 @@ describe("keyless api", () => {
     KEYLESS_TEST_TIMEOUT,
   );
 
+  test(
+    "installs jwks for a firebase iss",
+    async () => {
+      const sender = Account.generate();
+      await aptos.fundAccount({
+        accountAddress: sender.accountAddress,
+        amount: FUND_AMOUNT,
+      });
+      const jwkTransaction = await aptos.updateFederatedKeylessJwkSetTransaction({
+        sender,
+        iss: "https://securetoken.google.com/aptos-build",
+      });
+      const committedJwkTxn = await aptos.signAndSubmitTransaction({ signer: sender, transaction: jwkTransaction });
+      await aptos.waitForTransaction({ transactionHash: committedJwkTxn.hash });
+    },
+    KEYLESS_TEST_TIMEOUT,
+  );
+
   test("submitting a keyless txn using an outdated JWK should error with meaningful message", async () => {
     const jwt =
       "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6InRlc3QtcnNhMiJ9.eyJpc3MiOiJ0ZXN0Lm9pZGMucHJvdmlkZXIiLCJhdWQiOiJ0ZXN0LWtleWxlc3MtZGFwcCIsInN1YiI6InRlc3QtdXNlciIsImVtYWlsIjoidGVzdEBhcHRvc2xhYnMuY29tIiwiZW1haWxfdmVyaWZpZWQiOnRydWUsImlhdCI6OTg3NjU0MzIwOSwiZXhwIjo5ODc2NTQzMjEwLCJub25jZSI6IjcwOTUyNDIzMzM5NjQ0NTcyNjc5MzQ3MjM3NjgwODAzMDMzMjQ0NjI4MjExOTE3NTY0MDk0NTAwOTk1MTk3ODEwNTE5MTAxODcxMTgifQ.RmAz3eE_aVxjMGFHttKkUzPvwvDQuVdGFgXV3VihhY7a2B8juk_Pw-NqLEEgLDsB_Vh1jDoPySvogiEDwHZ5fToqk9brImdfmACw27pr--MQ6kn6n0k2XOPmMqjQ7KEMM43Rf7sK_9T-guovf0IVR44sJDqnCJanXBdZK52jNRvj2zmkMypVYXQHAz5jvJlCQcnTh0MpIm9IOgRzjKTk0ax8Wr9IDzzw__ljj036climWBzhGKKw9aKIek70Ug6h2604oI8CBRlxOKimw24NXIO_2jQBRMfeTW_hIm9q3pQ1OML-f7PMGdAAyVGx_sEM0wwYpcDfjBEgK1_RgRANRg";