diff --git a/debian/changelog b/debian/changelog
index 9d1dbfd52..3fb0a3724 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,8 +1,26 @@
+open5gs (2.3.1) unstable; urgency=medium
+
+  * Support ePDG Interface
+
+ -- Sukchan Lee <acetcom@gmail.com>  Tue, 29 Jun 2021 22:12:11 +0900
+
+open5gs (2.3.1~hirsute) hirsute; urgency=medium
+
+  * Support ePDG Interface
+
+ -- Sukchan Lee <acetcom@gmail.com>  Tue, 29 Jun 2021 22:11:04 +0900
+
+open5gs (2.3.1~bionic) bionic; urgency=medium
+
+  * Support ePDG Interface
+
+ -- Sukchan Lee <acetcom@gmail.com>  Tue, 29 Jun 2021 22:10:02 +0900
+
 open5gs (2.3.1~focal) focal; urgency=medium
 
   * Support ePDG Interface
 
- -- Sukchan Lee <acetcom@gmail.com>  Tue, 29 Jun 2021 09:55:40 +0900
+ -- Sukchan Lee <acetcom@gmail.com>  Tue, 29 Jun 2021 22:08:55 +0900
 
 open5gs (2.3.0) unstable; urgency=medium
 
diff --git a/docs/_posts/2021-06-29-release-v2.3.1.md b/docs/_posts/2021-06-29-release-v2.3.1.md
index 2400e6b7b..d39a1c0a9 100644
--- a/docs/_posts/2021-06-29-release-v2.3.1.md
+++ b/docs/_posts/2021-06-29-release-v2.3.1.md
@@ -1,6 +1,6 @@
 ---
 title: "v2.3.1 - Support ePDG Interface"
-date: 2021-06-29 09:37:00 +0900
+date: 2021-06-29 22:13:00 +0900
 categories:
   - Release
 tags: