diff --git a/modules/Bio/EnsEMBL/Registry.pm b/modules/Bio/EnsEMBL/Registry.pm
index f41adcf05699906495c34179ad2dc746775eb82a..49490a7eee419e5aa4d244dc51215871e1dc5084 100644
--- a/modules/Bio/EnsEMBL/Registry.pm
+++ b/modules/Bio/EnsEMBL/Registry.pm
@@ -119,7 +119,7 @@ use DBI;
 
 use vars qw(%registry_register);
 
-my $API_VERSION = 51;
+my $API_VERSION = 52;
 
 =head2 load_all