diff --git a/ChangeLog b/ChangeLog
index 611cb8e909..8ac7a1a3fc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jun 18 20:29:47 2013  Zachary Scott  <zachary@zacharyscott.net>
+
+	* ext/.document: add object_tracing.c to document file
+
 Tue Jun 18 20:20:27 2013  Zachary Scott  <zachary@zacharyscott.net>
 
 	* ext/objspace/objspace.c: rdoc on require to overview from r41355
diff --git a/ext/.document b/ext/.document
index 6997dbe356..4a8e06e498 100644
--- a/ext/.document
+++ b/ext/.document
@@ -44,6 +44,7 @@ mathn/rational/rational.c
 nkf/lib
 nkf/nkf.c
 objspace/objspace.c
+objspace/object_tracing.c
 openssl/lib
 openssl/ossl.c
 openssl/ossl_asn1.c