diff --git a/bitmap.c b/bitmap.c
index 5089b0407..5ecfe68b8 100644
--- a/bitmap.c
+++ b/bitmap.c
@@ -1,3 +1,4 @@
+/* $OpenBSD: bitmap.c,v 1.9 2017/10/20 01:56:39 djm Exp $ */
 /*
  * Copyright (c) 2015 Damien Miller <djm@mindrot.org>
  *
diff --git a/bitmap.h b/bitmap.h
index c1bb1741a..336e90b06 100644
--- a/bitmap.h
+++ b/bitmap.h
@@ -1,3 +1,4 @@
+/* $OpenBSD: bitmap.h,v 1.2 2017/10/20 01:56:39 djm Exp $ */
 /*
  * Copyright (c) 2015 Damien Miller <djm@mindrot.org>
  *
diff --git a/opacket.c b/opacket.c
index ad244b452..fca48e5f5 100644
--- a/opacket.c
+++ b/opacket.c
@@ -1,3 +1,4 @@
+/* $OpenBSD: opacket.c,v 1.7 2017/10/20 01:56:39 djm Exp $ */
 /* Written by Markus Friedl. Placed in the public domain.  */
 
 #include "includes.h"
diff --git a/opacket.h b/opacket.h
index c49d0c04a..b2c2e7f6a 100644
--- a/opacket.h
+++ b/opacket.h
@@ -1,3 +1,4 @@
+/* $OpenBSD: opacket.h,v 1.12 2017/10/20 01:56:39 djm Exp $ */
 #ifndef _OPACKET_H
 /* Written by Markus Friedl. Placed in the public domain.  */