diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 52bb280..a7e2158 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "jruby"]
+        ruby: ["2.5", "2.6", "2.7", "3.0", "3.1", "jruby"]
         experimental: [false]
         include:
         - ruby: "truffleruby"