diff --git a/Python/asm_trampoline.S b/Python/asm_trampoline.S
index 460707717df003..341d0bbe51f344 100644
--- a/Python/asm_trampoline.S
+++ b/Python/asm_trampoline.S
@@ -9,6 +9,9 @@
# }
_Py_trampoline_func_start:
#ifdef __x86_64__
+#if defined(__CET__) && (__CET__ & 1)
+ endbr64
+#endif
sub $8, %rsp
call *%rcx
add $8, %rsp
@@ -26,3 +29,22 @@ _Py_trampoline_func_start:
.globl _Py_trampoline_func_end
_Py_trampoline_func_end:
.section .note.GNU-stack,"",@progbits
+# Note for indicating the assembly code supports CET
+#if defined(__x86_64__) && defined(__CET__) && (__CET__ & 1)
+ .section .note.gnu.property,"a"
+ .align 8
+ .long 1f - 0f
+ .long 4f - 1f
+ .long 5
+0:
+ .string "GNU"
+1:
+ .align 8
+ .long 0xc0000002
+ .long 3f - 2f
+2:
+ .long 0x3
+3:
+ .align 8
+4:
+#endif // __x86_64__
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