diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6ea97e7..e569b2e 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -33,14 +33,23 @@ jobs:
         bundler-cache: true
     - name: Run test
       run: bundle exec rake compile test
-    - id: build
+    - id: fetch
       run: |
+        : Fetch deeper for changelogs
+        set -x
         git fetch --force --no-tags origin 'refs/tags/v*:refs/tags/v*'
+        tags=($(git tag --list --no-contains HEAD --sort -version:refname))
+        git fetch --shallow-exclude=${tags[0]} origin
+        set +x
+      shell: bash
+      if: ${{ matrix.ruby == needs.ruby-versions.outputs.latest }}
+    - id: build
+      run: |
         bundle exec rake build
         echo "pkg=${GITHUB_REPOSITORY#*/}-${RUNNING_OS%-*}" >> $GITHUB_OUTPUT
       env:
         RUNNING_OS: ${{matrix.os}}
-      if: ${{ matrix.ruby == fromJson(needs.ruby-versions.outputs.latest) }}
+      if: ${{ steps.fetch.outcome == 'success' }}
       shell: bash
       # Ubuntu 20.04 still has libyaml 0.2.2
     - name: Upload package
diff --git a/rakelib/changelogs.rake b/rakelib/changelogs.rake
index a4eb83f..d8daac6 100644
--- a/rakelib/changelogs.rake
+++ b/rakelib/changelogs.rake
@@ -1,30 +1,37 @@
+# Requires >= ruby 2.4, for `each(chomp: true)`
+
 task "build" => "changelogs"
 
 changelog = proc do |output, ver = nil, prev = nil|
   ver &&= Gem::Version.new(ver)
   range = [[prev], [ver, "HEAD"]].map {|ver, branch| ver ? "v#{ver.to_s}" : branch}.compact.join("..")
-  IO.popen(%W[git log --format=fuller --topo-order --no-merges #{range}]) do |log|
-    line = log.gets
+  cmd = %W[git log --date=iso --format=fuller --topo-order --no-merges
+               --invert-grep --fixed-strings --grep=#{'[ci skip]'} -z
+               #{range} --]
+  IO.popen(cmd) do |log|
+    break unless c = log.read(1)
+    log.ungetbyte(c)
     FileUtils.mkpath(File.dirname(output))
     File.open(output, "wb") do |f|
-      f.print "-*- coding: utf-8 -*-\n\n", line
-      log.each_line do |line|
-        line.sub!(/^(?!:)(?:Author|Commit)?(?:Date)?: /, '  \&')
-        line.sub!(/ +$/, '')
-        f.print(line)
+      f.print "-*- coding: utf-8 -*-\n"
+      log.each("\0", chomp: true) do |line|
+        next if /^Author: *\[bot\]@users\.noreply\.github\.com>/ =~ line
+        line.gsub!(/^(?!:)(?:Author|Commit)?(?:Date)?: /, '  \&')
+        line.gsub!(/ +$/, '')
+        f.print("\n", line)
       end
     end
   end
 end
 
 tags = IO.popen(%w[git tag -l v[0-9]*]).grep(/v(.*)/) {$1}
-tags.sort_by! {|tag| tag.scan(/\d+/).map(&:to_i)}
-if !tags.empty? and IO.popen(%W[git log --format=%H v#{tags.last}..HEAD], &:read).empty?
-  tags.pop
-end
-tags.inject(nil) do |prev, tag|
-  task("logs/ChangeLog-#{tag}") {|t| changelog[t.name, tag, prev]}
-  tag
+unless tags.empty?
+  tags.sort_by! {|tag| tag.scan(/\d+/).map(&:to_i)}
+  tags.pop if IO.popen(%W[git log --format=%H v#{tags.last}..HEAD --], &:read).empty?
+  tags.inject(nil) do |prev, tag|
+    task("logs/ChangeLog-#{tag}") {|t| changelog[t.name, tag, prev]}
+    tag
+  end
 end
 
 desc "Make ChangeLog"