diff --git a/lib/splitclient-rb.rb b/lib/splitclient-rb.rb
index 10a12a56..b2fd8c99 100644
--- a/lib/splitclient-rb.rb
+++ b/lib/splitclient-rb.rb
@@ -93,6 +93,7 @@
 require 'splitclient-rb/engine/matchers/semver'
 require 'splitclient-rb/engine/matchers/equal_to_semver_matcher'
 require 'splitclient-rb/engine/matchers/greater_than_or_equal_to_semver_matcher'
+require 'splitclient-rb/engine/matchers/less_than_or_equal_to_semver_matcher'
 require 'splitclient-rb/engine/evaluator/splitter'
 require 'splitclient-rb/engine/impressions/noop_unique_keys_tracker'
 require 'splitclient-rb/engine/impressions/unique_keys_tracker'
diff --git a/lib/splitclient-rb/engine/matchers/less_than_or_equal_to_semver_matcher.rb b/lib/splitclient-rb/engine/matchers/less_than_or_equal_to_semver_matcher.rb
new file mode 100644
index 00000000..4acf405b
--- /dev/null
+++ b/lib/splitclient-rb/engine/matchers/less_than_or_equal_to_semver_matcher.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module SplitIoClient
+  class LessThanOrEqualToSemverMatcher < Matcher
+    MATCHER_TYPE = 'LESS_THAN_OR_EQUAL_TO_SEMVER'
+
+    attr_reader :attribute
+
+    def initialize(attribute, string_value, logger, validator)
+      super(logger)
+      @validator = validator
+      @attribute = attribute
+      @semver = SplitIoClient::Semver.build(string_value, logger)
+      @logger = logger
+    end
+
+    def match?(args)
+      @logger.log_if_debug('[LessThanOrEqualsToSemverMatcher] evaluating value and attributes.')
+      return false unless @validator.valid_matcher_arguments(args) && args[:attributes][@attribute.to_sym].is_a?(String)
+
+      value_to_match = SplitIoClient::Semver.build(args[:attributes][@attribute.to_sym], @logger)
+      unless !value_to_match.nil? && !@semver.nil?
+        @logger.log_if_debug('stringMatcherData is required for LESS_THAN_OR_EQUAL_TO_SEMVER matcher type')
+        return false
+      end
+      matches = [0, -1].include?(value_to_match.compare(@semver))
+      @logger.log_if_debug("[LessThanOrEqualsToSemverMatcher] #{value_to_match} matches -> #{matches}")
+      matches
+    end
+  end
+end
diff --git a/lib/splitclient-rb/engine/matchers/semver.rb b/lib/splitclient-rb/engine/matchers/semver.rb
index ac9b7a58..92d9a6a8 100644
--- a/lib/splitclient-rb/engine/matchers/semver.rb
+++ b/lib/splitclient-rb/engine/matchers/semver.rb
@@ -8,10 +8,6 @@ class Semver
 
     attr_reader :major, :minor, :patch, :pre_release, :is_stable, :old_version
 
-    #
-    # Class Initializer
-    #
-    # @param version [String] raw version as read from splitChanges response.
     def initialize(version)
       @major = 0
       @minor = 0
@@ -22,6 +18,19 @@ def initialize(version)
       parse
     end
 
+    #
+    # Class builder
+    #
+    # @param version [String] raw version as read from splitChanges response.
+    #
+    # @return [type] Semver instance
+    def self.build(version, logger)
+      new(version)
+    rescue RuntimeError => e
+      logger.warn("Failed to parse Semver data:  #{e}")
+      nil
+    end
+
     #
     # Check if there is any metadata characters in self._old_version.
     #
diff --git a/lib/splitclient-rb/engine/parser/condition.rb b/lib/splitclient-rb/engine/parser/condition.rb
index 1670ecde..cd99225b 100644
--- a/lib/splitclient-rb/engine/parser/condition.rb
+++ b/lib/splitclient-rb/engine/parser/condition.rb
@@ -205,6 +205,14 @@ def matcher_greater_than_or_equal_to_semver(params)
       )
     end
 
+    def matcher_less_than_or_equal_to_semver(params)
+      LessThanOrEqualToSemverMatcher.new(
+        params[:matcher][:keySelector][:attribute],
+        params[:matcher][:stringMatcherData],
+        @config.split_logger, @config.split_validator
+      )
+    end
+
     #
     # @return [object] the negate value for this condition
     def negate
diff --git a/spec/engine/matchers/matches_less_than_or_equal_to_semver_matcher_spec.rb b/spec/engine/matchers/matches_less_than_or_equal_to_semver_matcher_spec.rb
new file mode 100644
index 00000000..f25b76b3
--- /dev/null
+++ b/spec/engine/matchers/matches_less_than_or_equal_to_semver_matcher_spec.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SplitIoClient::LessThanOrEqualToSemverMatcher do
+  let(:raw) { {
+    'negate': false,
+    'matcherType': 'LESS_THAN_OR_EQUAL_TO_SEMVER',
+    'stringMatcherData': "2.1.8"
+  } }
+  let(:config) { SplitIoClient::SplitConfig.new }
+
+  it 'initilized params' do
+    matcher = described_class.new("version", raw[:stringMatcherData], config.split_logger, config.split_validator)
+    expect(matcher.attribute).to eq("version")
+    semver = matcher.instance_variable_get(:@semver)
+    expect(semver.instance_variable_get(:@old_version)).to eq("2.1.8")
+  end
+
+  it 'matches' do
+    matcher = described_class.new("version", raw[:stringMatcherData], config.split_logger, config.split_validator)
+    expect(matcher.match?(:attributes=>{"version": "2.1.8+rc"})).to eq(true)
+    expect(matcher.match?(:attributes=>{"version": "2.1.8"})).to eq(true)
+    expect(matcher.match?(:attributes=>{"version": "2.1.5"})).to eq(true)
+    expect(matcher.match?(:attributes=>{"version": "2.1.5-rc1"})).to eq(true)
+  end
+
+  it 'does not match' do
+    matcher = described_class.new("version", raw[:stringMatcherData], config.split_logger, config.split_validator)
+    expect(matcher.match?(:attributes=>{"version": "2.1.11"})).to eq(false)
+    expect(matcher.match?(:attributes=>{"version": "2.2.0"})).to eq(false)
+  end
+
+  it 'invalid attribute' do
+    matcher = described_class.new("version", raw[:stringMatcherData], config.split_logger, config.split_validator)
+    expect(matcher.match?(:attributes=>{"version": 2.1})).to eq(false)
+    expect(matcher.match?(:attributes=>{"version": nil})).to eq(false)
+  end
+
+end