diff --git a/xla/python/ifrt/executable.h b/xla/python/ifrt/executable.h
index 879305ea4aee8..e544ebef3e3d0 100644
--- a/xla/python/ifrt/executable.h
+++ b/xla/python/ifrt/executable.h
@@ -125,7 +125,7 @@ struct ExecuteOptions {
   // Execution stream ID identifies the series of executions that must be
   // executed in program order.  Executions with different execution stream IDs
   // may be executed in any order and concurrently.
-  uint64_t execution_stream_id = 0;
+  int64_t execution_stream_id = 0;
 
   // Custom execution options specific to the runtime. The user and the runtime
   // are responsible for ensuring version compatibility.
diff --git a/xla/python/ifrt/execute_options.proto b/xla/python/ifrt/execute_options.proto
index 93a98e00b5c4c..832b19b61f0eb 100644
--- a/xla/python/ifrt/execute_options.proto
+++ b/xla/python/ifrt/execute_options.proto
@@ -24,7 +24,7 @@ message ExecuteOptionsProto {
   int32 launch_id = 3;
   repeated int32 non_donatable_input_indices = 7;
   bool fill_status = 9;
-  uint64 execution_stream_id = 11;
+  int64 execution_stream_id = 11;
   AttributeMapProto custom_options = 10;
 
   reserved 1, 4 to 6, 8;