diff --git a/lib/Core/ChefLastGoodRun.pm b/lib/Core/ChefLastGoodRun.pm
index 2f44c4c2c8cb55a047ce2346a861c7e4d17e43a4..1bf2cdbc7946c75999886ff7772fd0145b659a48 100644
--- a/lib/Core/ChefLastGoodRun.pm
+++ b/lib/Core/ChefLastGoodRun.pm
@@ -81,7 +81,7 @@ sub handler {
         }
     }
 
-    my $report = File::Slurp::readfile($report_path);
+    my $report = File::Slurp::read_file($report_path);
     $report = decode_json($report);
 
     $metrics{elapsed} = [ $report->{elapsed_time}, 'F' ];