2 files changed, 9 insertions, 0 deletions
diff --git a/src/cpl.cc b/src/cpl.cc
index 1775183d..76f6002b 100644
--- a/src/cpl.cc
+++ b/src/cpl.cc
@@ -657,6 +657,13 @@ CPL::set_version_number (int v)
 
 
 void
+CPL::unset_version_number ()
+{
+	_version_number = boost::none;
+}
+
+
+void
 CPL::set_content_versions (vector<ContentVersion> v)
 {
 	set<string> ids;
diff --git a/src/cpl.h b/src/cpl.h
index 06b59bd8..d96181e5 100644
--- a/src/cpl.h
+++ b/src/cpl.h
@@ -201,6 +201,8 @@ public:
 
 	void set_version_number (int v);
 
+	void unset_version_number ();
+
 	boost::optional<Status> status () const {
 		return _status;
 	}