diff --git a/lib/paper_trail/version_number.rb b/lib/paper_trail/version_number.rb
index 9c440c72..082cc514 100644
--- a/lib/paper_trail/version_number.rb
+++ b/lib/paper_trail/version_number.rb
@@ -1,9 +1,9 @@
 module PaperTrail
   module VERSION
-    MAJOR = 4
+    MAJOR = 5
     MINOR = 0
     TINY  = 0
-    PRE   = nil
+    PRE   = 'pre'
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')