diff --git a/mediapipe/gpu/copy_calculator.proto b/mediapipe/gpu/copy_calculator.proto
index 0eb8e295..fca53e98 100644
--- a/mediapipe/gpu/copy_calculator.proto
+++ b/mediapipe/gpu/copy_calculator.proto
@@ -18,8 +18,6 @@ package mediapipe;
 
 import "mediapipe/framework/calculator.proto";
 
-option cc_api_version = 2;
-
 message CopyCalculatorOptions {
   extend CalculatorOptions {
     optional CopyCalculatorOptions ext = 161773876;