diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index c485078e3..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,122 +0,0 @@
-version: 2.1
-jobs:
-  unit:
-    parameters:
-      ruby-version:
-        type: string
-    docker:
-      - image: cimg/ruby:<< parameters.ruby-version >>
-        environment:
-          LOG_LEVEL: DEBUG
-    steps:
-      - checkout
-      - run: sudo apt-get update && sudo apt-get install -y cmake # For installing snappy
-      - run: bundle install --path vendor/bundle
-      - run: bundle exec rspec
-      - run: bundle exec rubocop
-
-  functional-with-wurstmeister:
-    parameters:
-      kafka-version:
-        type: string
-    docker:
-      - image: cimg/ruby:2.5
-        environment:
-          LOG_LEVEL: DEBUG
-      - image: wurstmeister/zookeeper
-      - image: wurstmeister/kafka:<< parameters.kafka-version >>
-        environment:
-          KAFKA_ADVERTISED_HOST_NAME: localhost
-          KAFKA_ADVERTISED_PORT: 9092
-          KAFKA_PORT: 9092
-          KAFKA_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-      - image: wurstmeister/kafka:<< parameters.kafka-version >>
-        environment:
-          KAFKA_ADVERTISED_HOST_NAME: localhost
-          KAFKA_ADVERTISED_PORT: 9093
-          KAFKA_PORT: 9093
-          KAFKA_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-      - image: wurstmeister/kafka:<< parameters.kafka-version >>
-        environment:
-          KAFKA_ADVERTISED_HOST_NAME: localhost
-          KAFKA_ADVERTISED_PORT: 9094
-          KAFKA_PORT: 9094
-          KAFKA_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-    steps:
-      - checkout
-      - run: sudo apt-get update && sudo apt-get install -y cmake # For installing snappy
-      - run: bundle install --path vendor/bundle
-      - run: bundle exec rspec --profile --tag functional spec/functional
-
-  functional-with-bitnami:
-    parameters:
-      kafka-version:
-        type: string
-    docker:
-      - image: cimg/ruby:2.5
-        environment:
-          LOG_LEVEL: DEBUG
-      - image: bitnami/zookeeper
-        environment:
-          ALLOW_ANONYMOUS_LOGIN: yes
-      - image: bitnami/kafka:<< parameters.kafka-version >>
-        environment:
-          ALLOW_PLAINTEXT_LISTENER: yes
-          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
-          KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092
-          KAFKA_CFG_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-      - image: bitnami/kafka:<< parameters.kafka-version >>
-        environment:
-          ALLOW_PLAINTEXT_LISTENER: yes
-          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9093
-          KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9093
-          KAFKA_CFG_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-      - image: bitnami/kafka:<< parameters.kafka-version >>
-        environment:
-          ALLOW_PLAINTEXT_LISTENER: yes
-          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9094
-          KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9094
-          KAFKA_CFG_ZOOKEEPER_CONNECT: localhost:2181
-          KAFKA_DELETE_TOPIC_ENABLE: true
-    steps:
-      - checkout
-      - run: sudo apt-get update && sudo apt-get install -y cmake # For installing snappy
-      - run: bundle install --path vendor/bundle
-      - run: bundle exec rspec --profile --tag functional spec/functional
-
-workflows:
-  version: 2
-  test:
-    jobs:
-      - unit:
-          name: unit-ruby-<< matrix.ruby-version >>
-          matrix:
-            parameters:
-              ruby-version:
-                - "2.5"
-      - functional-with-wurstmeister:
-          name: functional-kafka-<< matrix.kafka-version >>
-          matrix:
-            parameters:
-              kafka-version:
-                - 2.11-0.11.0.3
-                - 2.11-1.0.2
-                - 2.11-1.1.1
-                - 2.11-2.0.1
-                - 2.12-2.1.1
-                - 2.12-2.2.1
-                - 2.12-2.3.1
-                - 2.12-2.4.0
-                - 2.12-2.5.0
-                - 2.13-2.6.0
-      - functional-with-bitnami:
-          name: functional-kafka-<< matrix.kafka-version >>
-          matrix:
-            parameters:
-              kafka-version:
-                - "2.7.0"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 000000000..03d6b67a1
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,189 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  unit:
+    name: unit-ruby-${{ matrix.ruby-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version: ["3.2"]
+    env:
+      LOG_LEVEL: DEBUG
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true
+
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y cmake # For installing snappy
+
+      - name: Run rspec
+        run: bundle exec rspec
+
+  functional-with-wurstmeister:
+    name: functional-wurstmeister-kafka-${{ matrix.kafka-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        kafka-version:
+          - "2.11-0.11.0.3"
+          - "2.11-1.0.2"
+          - "2.11-1.1.1"
+          - "2.11-2.0.1"
+          - "2.12-2.1.1"
+          - "2.12-2.2.1"
+          - "2.12-2.3.1"
+          - "2.12-2.4.0"
+          - "2.12-2.5.0"
+          - "2.13-2.6.0"
+    env:
+      LOG_LEVEL: DEBUG
+    services:
+      zookeeper:
+        image: wurstmeister/zookeeper
+        ports: ['2181:2181']
+      kafka1:
+        image: wurstmeister/kafka:${{ matrix.kafka-version }}
+        ports: ['9092:9092']
+        env:
+          KAFKA_BROKER_ID: 1
+          KAFKA_ADVERTISED_HOST_NAME: localhost
+          KAFKA_ADVERTISED_PORT: 9092
+          KAFKA_PORT: 9092 # Internal port Kafka listens on
+          KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_DELETE_TOPIC_ENABLE: "true"
+          KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
+      kafka2:
+        image: wurstmeister/kafka:${{ matrix.kafka-version }}
+        ports: ['9093:9093']
+        env:
+          KAFKA_BROKER_ID: 2
+          KAFKA_ADVERTISED_HOST_NAME: localhost
+          KAFKA_ADVERTISED_PORT: 9093
+          KAFKA_PORT: 9093
+          KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_DELETE_TOPIC_ENABLE: "true"
+          KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
+      kafka3:
+        image: wurstmeister/kafka:${{ matrix.kafka-version }}
+        ports: ['9094:9094']
+        env:
+          KAFKA_BROKER_ID: 3
+          KAFKA_ADVERTISED_HOST_NAME: localhost
+          KAFKA_ADVERTISED_PORT: 9094
+          KAFKA_PORT: 9094
+          KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_DELETE_TOPIC_ENABLE: "true"
+          KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y cmake
+
+      - name: Set up Ruby 2.5
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "2.5"
+          bundler-cache: true
+
+      - name: Wait for Kafka services
+        run: |
+          echo "Waiting for Kafka services to be ready..."
+          sleep 30 # Adjust if needed; consider a more robust health check script
+
+      - name: Run functional tests (wurstmeister)
+        run: bundle exec rspec --profile --tag functional spec/functional
+
+  functional-with-bitnami:
+    name: functional-bitnami-kafka-${{ matrix.kafka-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        kafka-version: ["2.7.0"]
+    env:
+      LOG_LEVEL: DEBUG
+    services:
+      zookeeper:
+        image: bitnami/zookeeper:latest
+        ports: ['2181:2181']
+        env:
+          ALLOW_ANONYMOUS_LOGIN: "yes"
+          ZOO_ENABLE_AUTH: "no"
+      kafka1:
+        image: bitnami/kafka:${{ matrix.kafka-version }}
+        ports: ['9092:9092']
+        env:
+          KAFKA_CFG_BROKER_ID: 1
+          KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
+          KAFKA_CFG_LISTENERS: PLAINTEXT://0.0.0.0:9092
+          KAFKA_CFG_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_CFG_DELETE_TOPIC_ENABLE: "true"
+          ALLOW_PLAINTEXT_LISTENER: "yes"
+          KAFKA_CFG_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_MIN_ISR: 1
+      kafka2:
+        image: bitnami/kafka:${{ matrix.kafka-version }}
+        ports: ['9093:9093']
+        env:
+          KAFKA_CFG_BROKER_ID: 2
+          KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9093
+          KAFKA_CFG_LISTENERS: PLAINTEXT://0.0.0.0:9093
+          KAFKA_CFG_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_CFG_DELETE_TOPIC_ENABLE: "true"
+          ALLOW_PLAINTEXT_LISTENER: "yes"
+          KAFKA_CFG_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_MIN_ISR: 1
+      kafka3:
+        image: bitnami/kafka:${{ matrix.kafka-version }}
+        ports: ['9094:9094']
+        env:
+          KAFKA_CFG_BROKER_ID: 3
+          KAFKA_CFG_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9094
+          KAFKA_CFG_LISTENERS: PLAINTEXT://0.0.0.0:9094
+          KAFKA_CFG_ZOOKEEPER_CONNECT: zookeeper:2181
+          KAFKA_CFG_DELETE_TOPIC_ENABLE: "true"
+          ALLOW_PLAINTEXT_LISTENER: "yes"
+          KAFKA_CFG_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
+          KAFKA_CFG_TRANSACTION_STATE_LOG_MIN_ISR: 1
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y cmake
+
+      - name: Set up Ruby 2.5
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "2.5"
+          bundler-cache: true
+
+      - name: Wait for Kafka services
+        run: |
+          echo "Waiting for Kafka services to be ready..."
+          sleep 45
+
+      - name: Run functional tests (bitnami)
+        run: bundle exec rspec --profile --tag functional spec/functional
diff --git a/ISSUE_TEMPLATE.md b/ISSUE_TEMPLATE.md
index e5ebc526f..f98b250b6 100644
--- a/ISSUE_TEMPLATE.md
+++ b/ISSUE_TEMPLATE.md
@@ -4,7 +4,7 @@ If this is a bug report, please fill out the following:
 * Version of Kafka:
 * Version of ruby-kafka:
 
-Please verify that the problem you're seeing hasn't been fixed by the current `master` of ruby-kafka.
+Please verify that the problem you're seeing hasn't been fixed by the current `main` of ruby-kafka.
 
 ###### Steps to reproduce
 
diff --git a/ruby-kafka.gemspec b/ruby-kafka.gemspec
index 929be9ef6..db1a10167 100644
--- a/ruby-kafka.gemspec
+++ b/ruby-kafka.gemspec
@@ -48,7 +48,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "prometheus-client", "~> 0.10.0"
   spec.add_development_dependency "ruby-prof"
   spec.add_development_dependency "timecop"
-  spec.add_development_dependency "rubocop", "~> 0.49.1"
   spec.add_development_dependency "gssapi", ">= 1.2.0"
   spec.add_development_dependency "stackprof"
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 1e8a44202..afd31da65 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 $LOAD_PATH.unshift File.expand_path("../../lib", __FILE__)
+require "logger"
 require "active_support"
 # A missing require for try has been added to rails master here:
 #   https://github.com/rails/rails/commit/530f7805ed5790af1d472a041bc74089dc183f47
@@ -10,7 +11,6 @@
 require "kafka"
 require "kafka/tagged_logger"
 require "dotenv"
-require "logger"
 require "rspec-benchmark"
 require "colored"
 require "securerandom"