diff --git a/Changes.md b/Changes.md
index 22dc765..1b28f7c 100644
--- a/Changes.md
+++ b/Changes.md
@@ -2,3 +2,8 @@
 -----------
 
 - Initial release!
+
+0.5.1
+———————————
+
+- Added -e/--environment ENV option to set the daemon rails environment.
diff --git a/Gemfile.lock b/Gemfile.lock
index c01a30f..050a141 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    crono (0.5.0)
+    crono (0.5.1)
       activejob (~> 4.0)
       activesupport (~> 4.0)
 
diff --git a/lib/crono/version.rb b/lib/crono/version.rb
index 8ae561b..59843f9 100644
--- a/lib/crono/version.rb
+++ b/lib/crono/version.rb
@@ -1,3 +1,3 @@
 module Crono
-  VERSION = "0.5.0"
+  VERSION = "0.5.1"
 end