diff --git a/CHANGELOG.md b/CHANGELOG.md
index e43a2f6..9701553 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## 1.2.1
+
+### Fixed
+
+* An issue that accessing `LineSDK.Instance.CurrentAccessToken` throws an exception on Android in some cases. [#49](https://github.com/line/line-sdk-unity/pull/49)
+
 ## 1.2.0
 
 Upgrade to this version of LINE SDK Unity requires full removal of the previous version. Please remove the "LineSDK" folder and LINE SDK files under "Plugins" to perform a clean upgrade. Please follow the [installation guide](https://developers.line.biz/en/docs/unity-sdk/upgrade-guide/) for more information.
diff --git a/Doxyfile b/Doxyfile
index f9ea862..64792c3 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "LINE SDK for Unity"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.2.0
+PROJECT_NUMBER         = 1.2.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a