diff --git a/lib/friendly_id/version.rb b/lib/friendly_id/version.rb
index e195cdaf9..e899ed363 100644
--- a/lib/friendly_id/version.rb
+++ b/lib/friendly_id/version.rb
@@ -3,7 +3,7 @@ module Version
     MAJOR = 3
     MINOR = 1
     TINY = 7
-    BUILD = nil
+    BUILD = 'pre'
     STRING = [MAJOR, MINOR, TINY, BUILD].compact.join('.')
   end
 end