diff --git a/doc/blog/content/post/release-0-2-0.md b/doc/blog/content/post/release-0-2-0.md
index 6cb91ee..f968ae5 100644
--- a/doc/blog/content/post/release-0-2-0.md
+++ b/doc/blog/content/post/release-0-2-0.md
@@ -9,7 +9,7 @@ Note: we recently renamed _Earthquake_ to _Namazu_.
 
 We are glad to annouce the release of [Namazu](https://github.com/osrg/namazu) v0.2.0.
 
-![Overview](/namazu/images/namazu.png)
+![Overview](/namazu/images/namazu-v0.2.png)
 
 Namazu v0.2.0 includes many new features: Process inspector, Filesystem inspector, Container CLI, Semi-deterministic replaying API...
 
diff --git a/doc/blog/content/post/release-0-2-1.md b/doc/blog/content/post/release-0-2-1.md
new file mode 100644
index 0000000..6fb0e12
--- /dev/null
+++ b/doc/blog/content/post/release-0-2-1.md
@@ -0,0 +1,40 @@
++++
+categories = ["blog"]
+date = "2016-09-05"
+tags = ["document"]
+title = "Release Namazu v0.2.1, with Namazu Swarm v0.0.1!"
+
++++
+
+We are glad to annouce the release of [Namazu](https://github.com/osrg/namazu) v0.2.1.
+
+![Overview](/namazu/images/namazu-v0.2.png)
+
+Namazu v0.2.1 is a maintanance release of [Namazu v0.2.0]({{< relref "post/release-0-2-0.md" >}})
+
+You can download the Namazu v0.2.1 binary release from [github](https://github.com/osrg/namazu/releases/tag/v0.2.1).
+
+Or you can also build Namazu manually:
+
+    $ sudo apt-get install libzmq3-dev libnetfilter-queue-dev
+    $ go get github.com/osrg/namazu/nmz
+
+## Changes from v0.2.0
+
+ * #167, #168, #169, #170: doc: miscellaneous improvements
+ * #166: vendor go packages
+ * #163: *: bump up Go to 1.7
+ * #162: container: add support for inspectors/fs
+ * #160: inspectors/fs: implement Fsync
+ * #158, #159: inspectors/fs: improved CLI (thank you @v01dstar !)
+ * #156: inspectors/proc: improved error handling
+ * #154, #155: inspectors/proc: improved CLI
+
+## Namazu Swarm v0.0.1
+
+We also released the first version of [Namazu Swarm](https://github.com/osrg/namazu-swarm), CI Job Parallelizer built on Docker and Kubernetes
+[Namazu Swarm](https://github.com/osrg/namazu-swarm) is developed as a part of Namazu, but it does not depends on Namazu (although you can combine them together).
+
+![Namazu Swarm](https://raw.githubusercontent.com/osrg/namazu-swarm/507f1ea51790ebc6d64740e8eb14e009d0353970/docs/img/nmzswarm.png)
+
+Namazu Swarm is hosted at [osrg/namazu-swarm](https://github.com/osrg/namazu-swarm).
diff --git a/doc/blog/static/images/namazu.png b/doc/blog/static/images/namazu-v0.2.png
similarity index 100%
rename from doc/blog/static/images/namazu.png
rename to doc/blog/static/images/namazu-v0.2.png
diff --git a/misc/analyzer/java/base/pom.xml b/misc/analyzer/java/base/pom.xml
index 54e8fde..7573916 100644
--- a/misc/analyzer/java/base/pom.xml
+++ b/misc/analyzer/java/base/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>net.osrg</groupId>
     <artifactId>namazu</artifactId>
-    <version>0.2.1-SNAPSHOT</version>
+    <version>0.2.1</version>
     <packaging>jar</packaging>
 
     <name>Namazu Analyzer (Java)</name>
diff --git a/misc/inspector/java/base/pom.xml b/misc/inspector/java/base/pom.xml
index 75f0241..ba312b8 100644
--- a/misc/inspector/java/base/pom.xml
+++ b/misc/inspector/java/base/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>net.osrg</groupId>
   <artifactId>namazu</artifactId>
-  <version>0.2.1-SNAPSHOT</version>
+  <version>0.2.1</version>
   <packaging>jar</packaging>
 
   <name>Namazu Inspector (Java)</name>
diff --git a/nmz/util/core/coreutil.go b/nmz/util/core/coreutil.go
index 24a14bd..f135a00 100644
--- a/nmz/util/core/coreutil.go
+++ b/nmz/util/core/coreutil.go
@@ -26,7 +26,7 @@ import (
 	logutil "github.com/osrg/namazu/nmz/util/log"
 )
 
-const NamazuVersion = "0.2.1-SNAPSHOT"
+const NamazuVersion = "0.2.1"
 
 // Returns true if NMZ_DEBUG is set
 func DebugMode() bool {