diff --git a/CHANGELOG.md b/CHANGELOG.md
index cf8da5a..08bfed6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 Authoritative changelog in README.md.
 
-## Next version
+## Version 1.0.0 (Oct 28, 2014)
 - Added RandomUniqueId::Util.set_initial_ids.
 - Started testing Ruby 2.1.2 and 2.1.3.
 - Started testing Rails 4.1 (fixed some deprecation warnings).
diff --git a/README.md b/README.md
index 8e43809..a69c98f 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ records. For example:
 
 ## Changelog
 
-### Next version
+### Version 1.0.0 (Oct 28, 2014)
 - Added RandomUniqueId::Util.set_initial_ids.
 - Started testing Ruby 2.1.2 and 2.1.3.
 - Started testing Rails 4.1 (fixed some deprecation warnings).
diff --git a/lib/random_unique_id/version.rb b/lib/random_unique_id/version.rb
index 67b509e..a8b2ac4 100644
--- a/lib/random_unique_id/version.rb
+++ b/lib/random_unique_id/version.rb
@@ -2,5 +2,5 @@
 # Copyright © 2013, 2014, Watu
 
 module RandomUniqueId
-  VERSION = "0.2.1"
+  VERSION = "1.0.0"
 end