diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51b2363d..2325ab83 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,17 @@
 > This project uses [Break Versioning](https://github.com/ptaoussanis/encore/blob/master/BREAK-VERSIONING.md) as of **Aug 16, 2014**.
 
-## v2.9.0 / 2015 June 1
+## v2.9.1 / 2015 Sep 14
+
+> This is a hotfix release with an **important fix** for Nippy encryption users
+
+* **Fix**: broken encryption thread-safety [#68]
+
+```clojure
+[com.taoensso/nippy "2.9.1"]
+```
+
+
+## v2.9.0 / 2015 Jun 1
 
 > This is a major, **non-breaking** release that improves performance and makes thawing more resilient to certain failures. Identical to **v2.9.0-RC3**.
 
diff --git a/README.md b/README.md
index 6ab612a0..28b91423 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 **[API docs][]** | **[CHANGELOG][]** | [other Clojure libs][] | [Twitter][] | [contact/contrib](#contact--contributing) | current [Break Version][]:
 
 ```clojure
-[com.taoensso/nippy "2.9.0"] ; Stable, see CHANGELOG for details
+[com.taoensso/nippy "2.9.1"] ; Stable, see CHANGELOG for details
 ```
 
 # Nippy, a Clojure serialization library
@@ -29,7 +29,7 @@ Nippy is an attempt to provide a reliable, high-performance **drop-in alternativ
 Add the necessary dependency to your [Leiningen][] `project.clj` and `require` the library in your ns:
 
 ```clojure
-[com.taoensso/nippy "2.9.0"] ; project.clj
+[com.taoensso/nippy "2.9.1"] ; project.clj
 (ns my-app (:require [taoensso.nippy :as nippy])) ; ns
 ```
 
diff --git a/project.clj b/project.clj
index 40cad9c8..5cfb1361 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject com.taoensso/nippy "2.9.0"
+(defproject com.taoensso/nippy "2.9.1"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "Clojure serialization library"
   :url "https://github.com/ptaoussanis/nippy"