diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0feeef8..d632c7c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         redis_server: ["4", "5", "6", "7"]
-        ruby: ["3.1", "3.2", "3.3"]
+        ruby: ["3.2", "3.3", "head"]
 
     name: Redis server ${{ matrix.redis_server }} - Ruby ${{ matrix.ruby }}
 
diff --git a/Gemfile.lock b/Gemfile.lock
index ec86b77..ea9b8e7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,195 +9,247 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
+    actioncable (8.0.1)
+      actionpack (= 8.0.1)
+      activesupport (= 8.0.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailbox (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      activejob (= 6.1.3.1)
-      activerecord (= 6.1.3.1)
-      activestorage (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-      mail (>= 2.7.1)
-    actionmailer (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      actionview (= 6.1.3.1)
-      activejob (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (6.1.3.1)
-      actionview (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-      rack (~> 2.0, >= 2.0.9)
+      zeitwerk (~> 2.6)
+    actionmailbox (8.0.1)
+      actionpack (= 8.0.1)
+      activejob (= 8.0.1)
+      activerecord (= 8.0.1)
+      activestorage (= 8.0.1)
+      activesupport (= 8.0.1)
+      mail (>= 2.8.0)
+    actionmailer (8.0.1)
+      actionpack (= 8.0.1)
+      actionview (= 8.0.1)
+      activejob (= 8.0.1)
+      activesupport (= 8.0.1)
+      mail (>= 2.8.0)
+      rails-dom-testing (~> 2.2)
+    actionpack (8.0.1)
+      actionview (= 8.0.1)
+      activesupport (= 8.0.1)
+      nokogiri (>= 1.8.5)
+      rack (>= 2.2.4)
+      rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actiontext (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      activerecord (= 6.1.3.1)
-      activestorage (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+      useragent (~> 0.16)
+    actiontext (8.0.1)
+      actionpack (= 8.0.1)
+      activerecord (= 8.0.1)
+      activestorage (= 8.0.1)
+      activesupport (= 8.0.1)
+      globalid (>= 0.6.0)
       nokogiri (>= 1.8.5)
-    actionview (6.1.3.1)
-      activesupport (= 6.1.3.1)
+    actionview (8.0.1)
+      activesupport (= 8.0.1)
       builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activejob (6.1.3.1)
-      activesupport (= 6.1.3.1)
+      erubi (~> 1.11)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    activejob (8.0.1)
+      activesupport (= 8.0.1)
       globalid (>= 0.3.6)
-    activemodel (6.1.3.1)
-      activesupport (= 6.1.3.1)
-    activerecord (6.1.3.1)
-      activemodel (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-    activestorage (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      activejob (= 6.1.3.1)
-      activerecord (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-      marcel (~> 1.0.0)
-      mini_mime (~> 1.0.2)
-    activesupport (6.1.3.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+    activemodel (8.0.1)
+      activesupport (= 8.0.1)
+    activerecord (8.0.1)
+      activemodel (= 8.0.1)
+      activesupport (= 8.0.1)
+      timeout (>= 0.4.0)
+    activestorage (8.0.1)
+      actionpack (= 8.0.1)
+      activejob (= 8.0.1)
+      activerecord (= 8.0.1)
+      activesupport (= 8.0.1)
+      marcel (~> 1.0)
+    activesupport (8.0.1)
+      base64
+      benchmark (>= 0.3)
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
       i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
       minitest (>= 5.1)
-      tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
     ast (2.4.2)
-    builder (3.2.4)
-    concurrent-ruby (1.1.8)
+    base64 (0.2.0)
+    benchmark (0.4.0)
+    bigdecimal (3.1.8)
+    builder (3.3.0)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crass (1.0.6)
-    debug (1.8.0)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
-    erubi (1.10.0)
-    globalid (0.4.2)
-      activesupport (>= 4.2.0)
-    i18n (1.8.10)
+    date (3.4.1)
+    debug (1.9.2)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
+    drb (2.2.1)
+    erubi (1.13.0)
+    globalid (1.2.1)
+      activesupport (>= 6.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    io-console (0.6.0)
-    irb (1.7.1)
-      reline (>= 0.3.0)
-    json (2.7.1)
+    io-console (0.8.0)
+    irb (1.14.2)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
+    json (2.9.0)
     language_server-protocol (3.17.0.3)
-    loofah (2.9.0)
+    logger (1.6.3)
+    loofah (2.23.1)
       crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    mail (2.7.1)
+      nokogiri (>= 1.12.0)
+    mail (2.8.1)
       mini_mime (>= 0.1.1)
-    marcel (1.0.1)
-    method_source (1.0.0)
-    mini_mime (1.0.3)
-    mini_portile2 (2.8.2)
-    minitest (5.14.4)
-    nio4r (2.5.7)
-    nokogiri (1.15.2)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.4)
+    mini_mime (1.1.5)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    net-imap (0.5.2)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.0)
+      net-protocol
+    nio4r (2.7.4)
+    nokogiri (1.17.2)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.15.2-arm64-darwin)
+    nokogiri (1.17.2-aarch64-linux)
+      racc (~> 1.4)
+    nokogiri (1.17.2-arm-linux)
+      racc (~> 1.4)
+    nokogiri (1.17.2-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.2-x86_64-darwin)
+    nokogiri (1.17.2-x86-linux)
       racc (~> 1.4)
-    parallel (1.24.0)
-    parser (3.2.2.4)
+    nokogiri (1.17.2-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.17.2-x86_64-linux)
+      racc (~> 1.4)
+    parallel (1.26.3)
+    parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
-    racc (1.7.1)
-    rack (2.2.3)
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
-    rails (6.1.3.1)
-      actioncable (= 6.1.3.1)
-      actionmailbox (= 6.1.3.1)
-      actionmailer (= 6.1.3.1)
-      actionpack (= 6.1.3.1)
-      actiontext (= 6.1.3.1)
-      actionview (= 6.1.3.1)
-      activejob (= 6.1.3.1)
-      activemodel (= 6.1.3.1)
-      activerecord (= 6.1.3.1)
-      activestorage (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
+    psych (5.2.1)
+      date
+      stringio
+    racc (1.8.1)
+    rack (3.1.8)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
+    rack-test (2.1.0)
+      rack (>= 1.3)
+    rackup (2.2.1)
+      rack (>= 3)
+    rails (8.0.1)
+      actioncable (= 8.0.1)
+      actionmailbox (= 8.0.1)
+      actionmailer (= 8.0.1)
+      actionpack (= 8.0.1)
+      actiontext (= 8.0.1)
+      actionview (= 8.0.1)
+      activejob (= 8.0.1)
+      activemodel (= 8.0.1)
+      activerecord (= 8.0.1)
+      activestorage (= 8.0.1)
+      activesupport (= 8.0.1)
       bundler (>= 1.15.0)
-      railties (= 6.1.3.1)
-      sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
+      railties (= 8.0.1)
+    rails-dom-testing (2.2.0)
+      activesupport (>= 5.0.0)
+      minitest
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
-      loofah (~> 2.3)
-    railties (6.1.3.1)
-      actionpack (= 6.1.3.1)
-      activesupport (= 6.1.3.1)
-      method_source
-      rake (>= 0.8.7)
-      thor (~> 1.0)
+    rails-html-sanitizer (1.6.2)
+      loofah (~> 2.21)
+      nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
+    railties (8.0.1)
+      actionpack (= 8.0.1)
+      activesupport (= 8.0.1)
+      irb (~> 1.13)
+      rackup (>= 1.0.0)
+      rake (>= 12.2)
+      thor (~> 1.0, >= 1.2.2)
+      zeitwerk (~> 2.6)
     rainbow (3.1.1)
-    rake (13.0.3)
-    redis (5.0.8)
-      redis-client (>= 0.17.0)
-    redis-client (0.19.1)
+    rake (13.2.1)
+    rdoc (6.9.1)
+      psych (>= 4.0.0)
+    redis (5.3.0)
+      redis-client (>= 0.22.0)
+    redis-client (0.23.0)
       connection_pool
-    regexp_parser (2.8.3)
-    reline (0.3.6)
+    regexp_parser (2.9.3)
+    reline (0.6.0)
       io-console (~> 0.5)
-    rexml (3.2.6)
-    rubocop (1.59.0)
+    rubocop (1.69.2)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.2.2.4)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.36.2, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.30.0)
-      parser (>= 3.2.1.0)
-    rubocop-minitest (0.34.2)
-      rubocop (>= 1.39, < 2.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
-    rubocop-performance (1.20.1)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.37.0)
+      parser (>= 3.3.1.0)
+    rubocop-minitest (0.36.0)
+      rubocop (>= 1.61, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-performance (1.23.0)
       rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
-    rubocop-rails (2.23.1)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-rails (2.27.0)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
-      rubocop (>= 1.33.0, < 2.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
+      rubocop (>= 1.52.0, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rails-omakase (1.0.0)
       rubocop
       rubocop-minitest
       rubocop-performance
       rubocop-rails
     ruby-progressbar (1.13.0)
-    sprockets (4.0.2)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.2)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    thor (1.1.0)
-    tzinfo (2.0.4)
+    securerandom (0.4.1)
+    stringio (3.1.2)
+    thor (1.3.2)
+    timeout (0.4.3)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unicode-display_width (2.5.0)
-    websocket-driver (0.7.3)
+    unicode-display_width (3.1.2)
+      unicode-emoji (~> 4.0, >= 4.0.4)
+    unicode-emoji (4.0.4)
+    uri (1.0.2)
+    useragent (0.16.11)
+    websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.4.2)
+    zeitwerk (2.7.1)
 
 PLATFORMS
+  aarch64-linux
+  arm-linux
   arm64-darwin
   ruby
+  x86-linux
   x86_64-darwin
+  x86_64-linux
 
 DEPENDENCIES
   debug (>= 1.0.0)
@@ -207,4 +259,4 @@ DEPENDENCIES
   rubocop-rails-omakase
 
 BUNDLED WITH
-   2.3.12
+   2.6.0
diff --git a/test/connections_test.rb b/test/connections_test.rb
index 08fb520..a3bc5bd 100644
--- a/test/connections_test.rb
+++ b/test/connections_test.rb
@@ -47,7 +47,7 @@ class ConnectionsTest < ActiveSupport::TestCase
   end
 
   test "default config without env" do
-    assert_match %r{redis://127.0.0.1:6379/0}, Kredis.redis.inspect
+    assert_match %r{redis://127.0.0.1:6379}, Kredis.redis.inspect
   end
 
   test "custom config is missing" do