diff --git a/lib/jwt/version.rb b/lib/jwt/version.rb
index 5cc21e01..f7ee1afc 100644
--- a/lib/jwt/version.rb
+++ b/lib/jwt/version.rb
@@ -13,9 +13,9 @@ module VERSION
     # minor version
     MINOR = 5
     # tiny version
-    TINY  = 4
+    TINY  = 5
     # alpha, beta, etc. tag
-    PRE   = nil
+    PRE   = 'dev'
 
     # Build version string
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')