diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2b87cf2d..13c4fbba 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,31 +6,12 @@ jobs:
   test:
     strategy:
       matrix:
-        ruby: ["4.0", "3.4", "3.3", "3.2", "3.1", "3.0", "2.7"]
-        rails: ["8.1", "8.0", "7.2", "7.1", "6.1"]
+        ruby: ["4.0", "3.4", "3.3", "3.2", "3.1"]
+        rails: ["8.1", "8.0", "7.2", "7.1"]
         exclude:
-          - rails: "6.1"
-            ruby: "3.4"
-
-          - rails: "6.1"
-            ruby: "4.0"
-
-          - rails: "7.2"
-            ruby: "2.7"
-          - rails: "7.2"
-            ruby: "3.0"
-
-          - rails: "8.0"
-            ruby: "2.7"
-          - rails: "8.0"
-            ruby: "3.0"
+          # Rails 8.x requires Ruby >= 3.2
           - rails: "8.0"
             ruby: "3.1"
-
-          - rails: "8.1"
-            ruby: "2.7"
-          - rails: "8.1"
-            ruby: "3.0"
           - rails: "8.1"
             ruby: "3.1"
 
diff --git a/.rubocop.yml b/.rubocop.yml
index 98af807d..46f19a25 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,7 +3,7 @@ inherit_mode:
     - Exclude
 
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 3.1
   DisabledByDefault: true
   SuggestExtensions: false
 
diff --git a/split.gemspec b/split.gemspec
index e76395e6..50425173 100644
--- a/split.gemspec
+++ b/split.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
     "funding_uri" => "https://opencollective.com/split"
   }
 
-  s.required_ruby_version = ">= 2.7.0"
+  s.required_ruby_version = ">= 3.1.0"
   s.required_rubygems_version = ">= 2.0.0"
 
   s.files         = `git ls-files`.split("\n")