diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 1e91f624878..8942e5ea828 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -55,8 +55,8 @@ on:
       - 'ruby/**'
 
 concurrency:
-  group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
-  cancel-in-progress: true
+  group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}-${{ github.run_id }}
+  cancel-in-progress: false
 
 permissions:
   contents: read
@@ -70,7 +70,7 @@ jobs:
   ubuntu:
     name: AMD64 Ubuntu ${{ matrix.ubuntu }} GLib & Ruby
     runs-on: ubuntu-latest
-    if: ${{ !contains(github.event.pull_request.title, 'WIP') }}
+    if: false
     timeout-minutes: 60
     strategy:
       fail-fast: false
@@ -126,7 +126,7 @@ jobs:
   macos:
     name: ARM64 macOS 14 GLib & Ruby
     runs-on: macos-latest
-    if: ${{ !contains(github.event.pull_request.title, 'WIP') }}
+    if: false
     timeout-minutes: 60
     env:
       ARROW_BUILD_STATIC: OFF
@@ -315,7 +315,7 @@ jobs:
   windows-msvc:
     name: AMD64 Windows MSVC GLib
     runs-on: windows-2022
-    if: ${{ !contains(github.event.pull_request.title, 'WIP') }}
+    if: false
     timeout-minutes: 240
     strategy:
       fail-fast: false
diff --git a/ruby/README.md b/ruby/README.md
index 39593d4b0d9..9d64573ffe7 100644
--- a/ruby/README.md
+++ b/ruby/README.md
@@ -17,7 +17,7 @@
   under the License.
 -->
 
-# Apache Arrow Ruby
+# Apache Arrow Ruby 8
 
 Here are the official Ruby bindings for Apache Arrow.
 
@@ -166,3 +166,40 @@ amounts.join(levels, [:name])
 # 1	Max 	     2	Max 	    1
 # 2	Kate	     3	Kate	    9
 ```
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diff --git a/ruby/red-arrow/lib/arrow/chunked-array.rb b/ruby/red-arrow/lib/arrow/chunked-array.rb
index 0cdd9b6a6d2..dc18ad76473 100644
--- a/ruby/red-arrow/lib/arrow/chunked-array.rb
+++ b/ruby/red-arrow/lib/arrow/chunked-array.rb
@@ -55,6 +55,9 @@ def to_arrow_chunked_array
 
     alias_method :chunks_raw, :chunks
     def chunks
+      if frozen? && !instance_variable_defined?(:@chunks)
+        return chunks_raw
+      end
       @chunks ||= chunks_raw.tap do |_chunks|
         _chunks.each do |chunk|
           share_input(chunk)
diff --git a/ruby/red-arrow/test/test-ractor.rb b/ruby/red-arrow/test/test-ractor.rb
index 2aef74d01a6..5830c836186 100644
--- a/ruby/red-arrow/test/test-ractor.rb
+++ b/ruby/red-arrow/test/test-ractor.rb
@@ -23,9 +23,12 @@ class RactorTest < Test::Unit::TestCase
     require_ruby(3, 1, 0)
     array = Arrow::Array.new([1, 2, 3])
     chunked_array = Arrow::ChunkedArray.new([array])
+    warn chunked_array.instance_variables
     Ractor.make_shareable(chunked_array)
+    warn chunked_array.instance_variables
     ractor = Ractor.new do
       recived_chunked_array = Ractor.receive
+      warn recived_chunked_array.instance_variables
       recived_chunked_array.chunks
     end
     ractor.send(chunked_array)