diff --git a/vllm/v1/worker/gpu_input_batch.py b/vllm/v1/worker/gpu_input_batch.py
index bc7578cbd97cd..fe834db115e70 100644
--- a/vllm/v1/worker/gpu_input_batch.py
+++ b/vllm/v1/worker/gpu_input_batch.py
@@ -204,7 +204,7 @@ class InputBatch:
         self.num_accepted_tokens_cpu = self.num_accepted_tokens_cpu_tensor.numpy()
 
         # lora related
-        self.request_lora_mapping = np.zeros((self.max_num_reqs,), dtype=np.int32)
+        self.request_lora_mapping = np.zeros((self.max_num_reqs,), dtype=np.int64)
         self.lora_id_to_request_ids: dict[int, set[str]] = {}
         self.lora_id_to_lora_request: dict[int, LoRARequest] = {}
 
diff --git a/vllm/v1/worker/tpu_input_batch.py b/vllm/v1/worker/tpu_input_batch.py
index 74e8225b2f4b8..d3fb17054c1a7 100644
--- a/vllm/v1/worker/tpu_input_batch.py
+++ b/vllm/v1/worker/tpu_input_batch.py
@@ -139,7 +139,7 @@ class InputBatch:
         self.min_tokens: dict[int, tuple[int, set[int]]] = {}
 
         # lora related
-        self.request_lora_mapping = np.zeros((self.max_num_reqs,), dtype=np.int32)
+        self.request_lora_mapping = np.zeros((self.max_num_reqs,), dtype=np.int64)
         self.lora_id_to_request_ids: dict[int, set[str]] = {}
         self.lora_id_to_lora_request: dict[int, LoRARequest] = {}