diff --git a/build.gradle b/build.gradle
index 05eba2b2d4..5a0109ff03 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@ apply plugin: 'maven'
 
 allprojects {
     group = 'io.digdag'
-    version = '0.8.15-SNAPSHOT'
+    version = '0.8.15'
 
     apply plugin: 'idea'
     apply plugin: 'java'
diff --git a/digdag-cli/src/main/java/io/digdag/cli/SelfUpdate.java b/digdag-cli/src/main/java/io/digdag/cli/SelfUpdate.java
index 1734cdf44d..6459d83fa8 100644
--- a/digdag-cli/src/main/java/io/digdag/cli/SelfUpdate.java
+++ b/digdag-cli/src/main/java/io/digdag/cli/SelfUpdate.java
@@ -55,7 +55,7 @@ public SystemExitException usage(String error)
         err.println("");
         err.println("  Examples:");
         err.println("    $ " + programName + " selfupdate");
-        err.println("    $ " + programName + " selfupdate 0.8.15-SNAPSHOT");
+        err.println("    $ " + programName + " selfupdate 0.8.15");
         err.println("");
         return systemExit(error);
     }
diff --git a/digdag-core/src/main/resources/io/digdag/core/version.txt b/digdag-core/src/main/resources/io/digdag/core/version.txt
index 547a969423..7d87d9947c 100644
--- a/digdag-core/src/main/resources/io/digdag/core/version.txt
+++ b/digdag-core/src/main/resources/io/digdag/core/version.txt
@@ -1 +1 @@
-0.8.15-SNAPSHOT
+0.8.15
diff --git a/digdag-docs/src/command_reference.rst b/digdag-docs/src/command_reference.rst
index 9f43699789..62fc8e582d 100644
--- a/digdag-docs/src/command_reference.rst
+++ b/digdag-docs/src/command_reference.rst
@@ -217,7 +217,7 @@ Updates the executable binary file to the latest version or specified version. E
 .. code-block:: console
 
     $ digdag selfupdate
-    $ digdag selfupdate 0.8.14
+    $ digdag selfupdate 0.8.15
 
 Server-mode commands
 ----------------------------------
diff --git a/digdag-docs/src/releases.rst b/digdag-docs/src/releases.rst
index 42475ae72e..9906a2e196 100644
--- a/digdag-docs/src/releases.rst
+++ b/digdag-docs/src/releases.rst
@@ -5,6 +5,7 @@ Release Notes
     :maxdepth: 1
 
     # add new version here
+    releases/release-0.8.15
     releases/release-0.8.14
     releases/release-0.8.13
     releases/release-0.8.12
diff --git a/digdag-docs/src/releases/release-0.8.15.rst b/digdag-docs/src/releases/release-0.8.15.rst
new file mode 100644
index 0000000000..42886a384e
--- /dev/null
+++ b/digdag-docs/src/releases/release-0.8.15.rst
@@ -0,0 +1,13 @@
+Release 0.8.15
+==============
+
+Workflow Changes
+----------------
+
+* The ``td.apikey`` and ``pg.password`` parameters have been deprecated in favor of secrets.
+* The ``call>`` operator now supports workflows in subdirectories.
+
+
+Release Date
+------------
+2016-09-21