diff --git a/include/sys/ptrace.h b/include/sys/ptrace.h
index bc385f8c..d9d45408 100644
--- a/include/sys/ptrace.h
+++ b/include/sys/ptrace.h
@@ -39,6 +39,7 @@ extern "C" {
 #define PTRACE_PEEKSIGINFO 0x4209
 #define PTRACE_GETSIGMASK 0x420a
 #define PTRACE_SETSIGMASK 0x420b
+#define PTRACE_SECCOMP_GET_FILTER 0x420c
 
 #define PT_READ_I PTRACE_PEEKTEXT
 #define PT_READ_D PTRACE_PEEKDATA