diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 686ce19..885a697 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         os: [ ubuntu-20.04 ]
         rack: [ '~> 2.0', '~> 3.0' ]
-        ruby: [ 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, '3.0', 3.1, 3.2 ]
+        ruby: [ 2.3, 2.4, 2.5, 2.6, 2.7, '3.0', 3.1, 3.2 ]
         gemfile: [ Gemfile ]
         exclude:
           # Rack 3 needs >= Ruby 2.4