diff --git a/src/flag.rs b/src/flag.rs
index 7d2dbde..57f2246 100644
--- a/src/flag.rs
+++ b/src/flag.rs
@@ -123,6 +123,7 @@ bitflags! {
         const PTRACE_STOP_POST_SYSCALL = 0x0000_0000_0000_0002;
         const PTRACE_STOP_SINGLESTEP = 0x0000_0000_0000_0004;
         const PTRACE_STOP_SIGNAL = 0x0000_0000_0000_0008;
+        const PTRACE_STOP_BREAKPOINT = 0x0000_0000_0000_0010;
         const PTRACE_STOP_MASK = 0x0000_0000_0000_00FF;
 
         const PTRACE_EVENT_CLONE = 0x0000_0000_0000_0100;