diff --git a/moto/sts/responses.py b/moto/sts/responses.py
index 85a0c34e730e..40f8d4f72783 100644
--- a/moto/sts/responses.py
+++ b/moto/sts/responses.py
@@ -40,7 +40,7 @@ def get_federation_token(self) -> str:
         name = self.querystring.get("Name")[0]  # type: ignore
         token = self.backend.get_federation_token(duration=duration, name=name)
         template = self.response_template(GET_FEDERATION_TOKEN_RESPONSE)
-        return template.render(token=token, account_id=self.current_account)
+        return template.render(token=token, account_id=self.current_account, partition=self.partition)
 
     def assume_role(self) -> str:
         role_session_name = self.querystring.get("RoleSessionName")[0]  # type: ignore
@@ -128,7 +128,7 @@ def get_caller_identity(self) -> str:
       <AccessKeyId>AKIAIOSFODNN7EXAMPLE</AccessKeyId>
     </Credentials>
     <FederatedUser>
-      <Arn>arn:aws:sts::{{ account_id }}:federated-user/{{ token.name }}</Arn>
+      <Arn>arn:{{ partition }}:sts::{{ account_id }}:federated-user/{{ token.name }}</Arn>
       <FederatedUserId>{{ account_id }}:{{ token.name }}</FederatedUserId>
     </FederatedUser>
     <PackedPolicySize>6</PackedPolicySize>