diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7e37ee4c869..699213f5c82 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,7 +14,6 @@ jobs:
     strategy:
       matrix:
         ruby-version:
-        - '2.7'
         - '3.0'
         test-suite:
         - vmdb
@@ -43,7 +42,6 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: "${{ matrix.ruby-version }}"
-        rubygems: "${{ matrix.ruby-version == '2.7' && 'latest' || 'default' }}"
         bundler-cache: true
       timeout-minutes: 30
     - name: Prepare tests
diff --git a/Gemfile b/Gemfile
index 914a95bdd83..69301c24dbc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-raise "Ruby versions < 2.7.0 are unsupported!" if RUBY_VERSION < "2.7.0"
+raise "Ruby versions < 3.0.0 are unsupported!" if RUBY_VERSION < "3.0.0"
 raise "Ruby versions >= 3.1.0 are unsupported!" if RUBY_VERSION >= "3.1.0"
 
 source 'https://rubygems.org'
diff --git a/spec/models/custom_attribute_spec.rb b/spec/models/custom_attribute_spec.rb
index b799569a7db..6aa7f01fc27 100644
--- a/spec/models/custom_attribute_spec.rb
+++ b/spec/models/custom_attribute_spec.rb
@@ -12,9 +12,6 @@
   end
 
   it "returns the value type of Integer custom attributes" do
-    # TODO: Ruby 2.4 unifies fixnum and bignum into integer, we shouldn't be
-    # returnings ruby types like this.
-    expected = RUBY_VERSION >= "2.4.0" ? :integer : :fixnum
-    expect(int_custom_attribute.value_type).to eq(expected)
+    expect(int_custom_attribute.value_type).to eq(:integer)
   end
 end