diff --git a/.gitattributes b/.gitattributes
index d956a45753c80c..6da587a4c6ea5a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -68,6 +68,7 @@ Doc/data/stable_abi.dat                      generated
 Doc/library/token-list.inc                   generated
 Include/internal/pycore_ast.h                generated
 Include/internal/pycore_ast_state.h          generated
+Include/internal/pycore_opcode.h             generated
 Include/opcode.h                             generated
 Include/token.h                              generated
 Lib/keyword.py                               generated