diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index cf8a315c66a0..3ab4b4387d26 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,6 +14,7 @@ jobs:
     strategy:
       matrix:
         ruby-version:
+        - '2.7'
         - '3.0'
         - '3.1'
         test-suite:
diff --git a/Gemfile b/Gemfile
index fab3f71d472d..c770a1e7e701 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-raise "Ruby versions < 3.0.0 are unsupported!" if RUBY_VERSION < "3.0.0"
+raise "Ruby versions < 2.7.0 are unsupported!" if RUBY_VERSION < "2.7.0"
 raise "Ruby versions >= 3.1.0 are unsupported!" if RUBY_VERSION >= "3.2.0"
 
 source 'https://rubygems.org'