diff --git a/.github/workflows/alpine.yml b/.github/workflows/alpine.yml
index 7f4e8d50..543f3052 100644
--- a/.github/workflows/alpine.yml
+++ b/.github/workflows/alpine.yml
@@ -118,10 +118,11 @@ jobs:
           make -j4
           make install
 
-      - name: Install bundler
+      - name: Install bundle
         run: |
           gem install bundler
           bundle install
+          bundle exec rake generate_version_txt
 
       - name: Create deps folder
         run: mkdir ${{ env.DEPS }}
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 36725c39..2141f919 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -112,6 +112,7 @@ jobs:
       - name: tebako setup
         run: |
           bundle install
+          bundle exec rake generate_version_txt
           ${{ github.workspace }}/exe/tebako setup
 
   tests-1:
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index e347a768..7c6ff20e 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -137,6 +137,7 @@ jobs:
       - name: tebako setup
         run: |
           bundle install
+          bundle exec rake generate_version_txt
           ${{ github.workspace }}/exe/tebako setup
 
   tests-1:
diff --git a/Rakefile b/Rakefile
index 90bfe395..f05d7148 100644
--- a/Rakefile
+++ b/Rakefile
@@ -31,3 +31,13 @@ require "rubocop/rake_task"
 RuboCop::RakeTask.new
 
 task default: %i[rubocop]
+
+desc "Generate version.txt"
+task "generate_version_txt" do
+  require_relative "lib/tebako/version"
+  File.write(File.join(__dir__, "version.txt"), "#{Tebako::VERSION}\n")
+  puts "Generate version.txt #{Tebako::VERSION} ==> #{File.join(__dir__, "version.txt")}"
+end
+
+task build: :generate_version_txt
+task release: :generate_version_txt
diff --git a/lib/tebako/cli.rb b/lib/tebako/cli.rb
index fc434b35..520bcca8 100755
--- a/lib/tebako/cli.rb
+++ b/lib/tebako/cli.rb
@@ -93,12 +93,6 @@ def options
         defaults = ::YAML.load_file(OPTIONS_FILE) || {}
         Thor::CoreExt::HashWithIndifferentAccess.new(defaults.merge(original_options))
       end
-
-      def generate
-        FileUtils.mkdir_p(prefix)
-        File.write(File.join(prefix, "version.txt"), "#{Tebako::VERSION}\n")
-        puts("all: ")
-      end
     end
 
     private
@@ -111,8 +105,6 @@ def do_press
       end
 
       def do_setup
-        FileUtils.mkdir_p(prefix)
-        File.write(File.join(prefix, "version.txt"), "#{Tebako::VERSION}\n")
         packaging_error(101) unless system(b_env, "cmake -DSETUP_MODE:BOOLEAN=ON #{cfg_options}")
         packaging_error(102) unless system(b_env,
                                            "cmake --build #{output} --target setup --parallel #{Etc.nprocessors}")
diff --git a/lib/tebako/version.rb b/lib/tebako/version.rb
index bddef5b4..7f83cfe2 100644
--- a/lib/tebako/version.rb
+++ b/lib/tebako/version.rb
@@ -26,5 +26,5 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 module Tebako
-  VERSION = "0.5.1"
+  VERSION = "0.5.2"
 end
diff --git a/tebako.gemspec b/tebako.gemspec
index a2cd9ead..2174d202 100644
--- a/tebako.gemspec
+++ b/tebako.gemspec
@@ -54,6 +54,9 @@ Gem::Specification.new do |spec|
         f.match(%r{\A(?:(?:test|spec|features|deps|output|common\.env)/|\.(?:git|cirrus|tebako|rubocop))})
     end
   end
+
+  spec.files << "version.txt"
+
   spec.bindir = "exe"
   spec.executables = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }
   spec.require_paths = %w[cmake exe ext include lib resources src tools/ci-scripts tools/cmake-scripts tools/includes]
diff --git a/tests-2/tebako-test.rb b/tests-2/tebako-test.rb
index a4f00b96..8fdd8f42 100755
--- a/tests-2/tebako-test.rb
+++ b/tests-2/tebako-test.rb
@@ -268,11 +268,12 @@ def test_102_launcher_stdinredir
   # -- that we are linking to known set of shared libraries (https://github.com/tamatebako/tebako/issues/42)
 
   def expected_libs
-    if RbConfig::CONFIG["target_os"] =~ /darwin/
+    case RbConfig::CONFIG["target_os"]
+    when /darwin/
       ["Security.framework", "Foundation.framework", "CoreFoundation.framework", "libSystem",
        "libc++", "launcher-package-package:"]
     # This is the test program itself: 'launcher-package-package:'
-    elsif RbConfig::CONFIG["target_os"] =~ /linux-musl/
+    when /linux-musl/
       ["libc.musl-x86_64.so", "ld-musl-x86_64.so"]
     else # linux-gnu assumed
       ["linux-vdso.so", "libpthread.so", "libdl.so", "libc.so", "ld-linux-", "libm.so",