diff --git a/README.md b/README.md
index fd5954a8..06d499db 100644
--- a/README.md
+++ b/README.md
@@ -702,6 +702,7 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 1492. The kth Factor of n                                                           | [Link](https://leetcode.com/problems/the-kth-factor-of-n/)                                                           | [Link](./lib/medium/1492_the_kth_factor_of_n.rb)                                                           | [Link](./test/medium/test_1492_the_kth_factor_of_n.rb)                                                           |
 | 1504. Count Submatrices With All Ones                                               | [Link](https://leetcode.com/problems/count-submatrices-with-all-ones/)                                               | [Link](./lib/medium/1504_count_submatrices_with_all_ones.rb)                                               | [Link](./test/medium/test_1504_count_submatrices_with_all_ones.rb)                                               |
 | 1525. Number of Good Ways to Split a String                                         | [Link](https://leetcode.com/problems/number-of-good-ways-to-split-a-string/)                                         | [Link](./lib/medium/1525_number_of_good_ways_to_split_a_string.rb)                                         | [Link](./test/medium/test_1525_number_of_good_ways_to_split_a_string.rb)                                         |
+| 1529. Minimum Suffix Flips                                                          | [Link](https://leetcode.com/problems/minimum-suffix-flips/)                                                          | [Link](./lib/medium/1529_minimum_suffix_flips.rb)                                                          | [Link](./test/medium/test_1529_minimum_suffix_flips.rb)                                                          |
 | 2116. Check if a Parentheses String Can Be Valid                                    | [Link](https://leetcode.com/problems/check-if-a-parentheses-string-can-be-valid/)                                    | [Link](./lib/medium/2116_check_if_a_parentheses_string_can_be_valid.rb)                                    | [Link](./test/medium/test_2116_check_if_a_parentheses_string_can_be_valid.rb)                                    |
 | 2425. Bitwise XOR of All Pairings                                                   | [Link](https://leetcode.com/problems/bitwise-xor-of-all-pairings/)                                                   | [Link](./lib/medium/2425_bitwise_xor_of_all_pairings.rb)                                                   | [Link](./test/medium/test_2425_bitwise_xor_of_all_pairings.rb)                                                   |
 | 2429. Minimize XOR                                                                  | [Link](https://leetcode.com/problems/minimize-xor/)                                                                  | [Link](./lib/medium/2429_minimize_xor.rb)                                                                  | [Link](./test/medium/test_2429_minimize_xor.rb)                                                                  |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index 28b2988c..43824e1c 100644
--- a/leetcode-ruby.gemspec
+++ b/leetcode-ruby.gemspec
@@ -5,7 +5,7 @@ require 'English'
 ::Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.0'
   s.name = 'leetcode-ruby'
-  s.version = '8.6.8'
+  s.version = '8.6.9'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[README.md]
   s.executable = 'leetcode-ruby'
diff --git a/lib/medium/1529_minimum_suffix_flips.rb b/lib/medium/1529_minimum_suffix_flips.rb
new file mode 100644
index 00000000..c145c295
--- /dev/null
+++ b/lib/medium/1529_minimum_suffix_flips.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/minimum-suffix-flips/
+# @param {String} target
+# @return {Integer}
+def min_flips(target)
+  flip = '0'
+  result = 0
+
+  (0...target.size).each do |i|
+    next if target[i] == flip
+
+    flip = target[i]
+    result += 1
+  end
+
+  result
+end
diff --git a/test/medium/test_1529_minimum_suffix_flips.rb b/test/medium/test_1529_minimum_suffix_flips.rb
new file mode 100644
index 00000000..47fb1d1a
--- /dev/null
+++ b/test/medium/test_1529_minimum_suffix_flips.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/medium/1529_minimum_suffix_flips'
+require 'minitest/autorun'
+
+class MinimumSuffixFlipsTest < ::Minitest::Test
+  def test_default_one = assert_equal(3, min_flips('10111'))
+
+  def test_default_two = assert_equal(3, min_flips('101'))
+end