diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index f8827c19..2a3062a9 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -15,6 +15,6 @@ jobs:
         ruby-version: '2.7'
     - name: Build and test with Rake
       run: |
-        gem install bundler
+        gem install bundler -v 2.4.22
         bundle install --jobs 4 --retry 3
         bundle exec rake
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7d15298..bea9a742 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](https://semver.org).
 This changelog adheres to [Keep a CHANGELOG](https://keepachangelog.com).
 
 ## [Unreleased]
+### Added
+- (VANAGON-238) Add SLES11 (Intel) platform definition to vanagon
 
 ## [0.44.0] - 2023-11-30
 ### Added
diff --git a/lib/vanagon/engine/base.rb b/lib/vanagon/engine/base.rb
index df2939fe..528e3e6b 100644
--- a/lib/vanagon/engine/base.rb
+++ b/lib/vanagon/engine/base.rb
@@ -102,7 +102,7 @@ def retrieve_built_artifact(artifacts_to_fetch, no_packaging)
       def validate_platform
         missing_attrs = []
         @required_attributes.each do |attr|
-          if !@platform.instance_variables.include?("@#{attr}".to_sym) || @platform.instance_variable_get("@#{attr}".to_sym).nil?
+          if !@platform.instance_variables.include?(:"@#{attr}") || @platform.instance_variable_get(:"@#{attr}").nil?
             missing_attrs << attr
           end
         end
diff --git a/lib/vanagon/platform.rb b/lib/vanagon/platform.rb
index 8c704036..d4ff15e6 100644
--- a/lib/vanagon/platform.rb
+++ b/lib/vanagon/platform.rb
@@ -474,7 +474,7 @@ def is_windows?
     #
     # @return [true, false] true if it is a linux variety, false otherwise
     def is_linux?
-      return (!is_windows? && !is_unix?)
+      return !is_windows? && !is_unix?
     end
 
     # Utility matcher to determine if the platform is a cross-compiled variety
@@ -490,7 +490,7 @@ def is_cross_compiled?
     #
     # @return [true, false] true if it is a cross-compiled Linux variety, false otherwise
     def is_cross_compiled_linux?
-      return (is_cross_compiled? && is_linux?)
+      return is_cross_compiled? && is_linux?
     end
 
     # Pass in a packaging override. This needs to be implemented for each
diff --git a/lib/vanagon/platform/defaults/sles-11-x86_64.rb b/lib/vanagon/platform/defaults/sles-11-x86_64.rb
new file mode 100644
index 00000000..f1fefb94
--- /dev/null
+++ b/lib/vanagon/platform/defaults/sles-11-x86_64.rb
@@ -0,0 +1,11 @@
+platform "sles-11-x86_64" do |plat|
+  plat.servicedir "/usr/lib/systemd/system"
+  plat.defaultdir "/etc/sysconfig"
+  plat.servicetype "systemd"
+
+  plat.add_build_repository "http://pl-build-tools.delivery.puppetlabs.net/yum/pl-build-tools-release-#{plat.get_os_name}-#{plat.get_os_version}.noarch.rpm"
+  packages = %w(aaa_base autoconf automake rsync gcc make rpm-build)
+  plat.provision_with "zypper -n --no-gpg-checks install -y #{packages.join(' ')}"
+  plat.install_build_dependencies_with "zypper -n --no-gpg-checks install -y"
+  plat.vmpooler_template "sles-11-x86_64"
+end