diff --git a/.github/workflows/gosum.yml b/.github/workflows/gosum.yml
index d09d2539..bc393bbe 100644
--- a/.github/workflows/gosum.yml
+++ b/.github/workflows/gosum.yml
@@ -3,7 +3,8 @@ name: gosum
 on:
   push:
     branches:
-      - '**'
+      - 'master'
+      - 'v*'
     paths:
       - '.github/workflows/gosum.yml'
       - 'go.mod'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b8b1031..c9b35fc6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## 4.0.0 (2020/06/??)
+## 4.0.0 (2020/06/22)
 
 :warning: See **Migration notes** in the documentation for breaking changes.
 
diff --git a/mkdocs.yml b/mkdocs.yml
index 5145479b..cc120b6a 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -7,9 +7,6 @@ docs_dir: docs
 
 repo_name: crazy-max/diun
 repo_url: https://github.com/crazy-max/diun
-copyright: |
-  Made with <img alt="❤" class="twemoji md-footer-custom-text" src="https://twemoji.maxcdn.com/v/latest/svg/2764.svg" title="love">
-  by <a target="_blank" href="https://crazymax.dev/">CrazyMax</a> and <a target="_blank" href="https://github.com/crazy-max/diun/graphs/contributors">contributors</a>.
 
 extra:
   social:
@@ -35,6 +32,9 @@ theme:
   include_search_page: false
   search_index_only: true
 
+extra_css:
+  - css/extra.css
+
 plugins:
   - macros
   - search:
@@ -105,6 +105,3 @@ markdown_extensions:
       emoji_generator: !!python/name:materialx.emoji.to_svg
   - toc:
       permalink: true
-
-extra_css:
-  - css/extra.css