diff --git a/lib/ProgressTracker.pm b/lib/ProgressTracker.pm
index b5f5bfb..a79720c 100644
--- a/lib/ProgressTracker.pm
+++ b/lib/ProgressTracker.pm
@@ -8,6 +8,7 @@ use strict;
 use warnings;
 
 my $DEFAULT_REPORT_INTERVAL = 1000;
+our $VERSION = 0.9.0;
 
 # TODO perldoc