diff --git a/.github/workflows/liquid.yml b/.github/workflows/liquid.yml
index 7c4366d..00c51a4 100644
--- a/.github/workflows/liquid.yml
+++ b/.github/workflows/liquid.yml
@@ -6,7 +6,6 @@ jobs:
     strategy:
       matrix:
         entry:
-          - { ruby: 2.4, allowed-failure: false }
           - { ruby: 2.5, allowed-failure: false }
           - { ruby: 2.6, allowed-failure: false }
           - { ruby: 2.7, allowed-failure: false }
diff --git a/liquid.gemspec b/liquid.gemspec
index cf1b75f..9a26162 100644
--- a/liquid.gemspec
+++ b/liquid.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.license     = "MIT"
   # s.description = "A secure, non-evaling end user template engine with aesthetic markup."
 
-  s.required_ruby_version     = ">= 2.4.0"
+  s.required_ruby_version     = ">= 2.5.0"
   s.required_rubygems_version = ">= 1.3.7"
 
   s.test_files  = Dir.glob("{test}/**/*")