diff --git a/.github/workflows/rubyonrails.yml b/.github/workflows/rubyonrails.yml
index 0ab7038c..45b6bf78 100644
--- a/.github/workflows/rubyonrails.yml
+++ b/.github/workflows/rubyonrails.yml
@@ -21,9 +21,9 @@
 name: "GitHub CI"
 on:
   push:
-    branches: ["master"]
+    branches: ["devel"]
   pull_request:
-    branches: ["master"]
+    branches: ["devel"]
 jobs:
   plugin_tests:
     strategy:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9aee393..5601ab63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 Changelog for Redmine DMSF
 ==========================
 
+3.1.0 *????-??-??*
+------------------
+
+    Compatibility with Redmine 5.1
+
 3.0.13 *2023-06-21*
 ------------------
 
diff --git a/README.md b/README.md
index 83750afc..3d954464 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
-Redmine DMSF Plugin 3.0.13
-==========================
+Redmine DMSF Plugin 3.1.0 devel
+===============================
 
 [![GitHub CI](https://github.com/danmunn/redmine_dmsf/actions/workflows/rubyonrails.yml/badge.svg?branch=master)](https://github.com/danmunn/redmine_dmsf/actions/workflows/rubyonrails.yml)
 [![Support Ukraine Badge](https://bit.ly/support-ukraine-now)](https://github.com/support-ukraine/support-ukraine)
diff --git a/init.rb b/init.rb
index 2215a88a..51eda326 100644
--- a/init.rb
+++ b/init.rb
@@ -26,7 +26,7 @@ Redmine::Plugin.register :redmine_dmsf do
   author_url 'https://github.com/danmunn/redmine_dmsf/graphs/contributors'
   author 'Vít Jonáš / Daniel Munn / Karel Pičman'
   description 'Document Management System Features'
-  version '3.0.13'
+  version '3.1.0'
 
   requires_redmine version_or_higher: '5.0.0'