diff --git a/README.md b/README.md
index c5c8726b..487b4ffe 100644
--- a/README.md
+++ b/README.md
@@ -412,3 +412,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 2309. Greatest English Letter in Upper and Lower Case              | [Link](https://leetcode.com/problems/greatest-english-letter-in-upper-and-lower-case/)              | [Link](./lib/easy/2309_greatest_english_letter_in_upper_and_lower_case.rb)              |
 | 2315. Count Asterisks                                              | [Link](https://leetcode.com/problems/count-asterisks/)                                              | [Link](./lib/easy/2315_count_asterisks.rb)                                              |
 | 2319. Check if Matrix Is X-Matrix                                  | [Link](https://leetcode.com/problems/check-if-matrix-is-x-matrix/)                                  | [Link](./lib/easy/2319_check_if_matrix_is_x_matrix.rb)                                  |
+| 2325. Decode the Message                                           | [Link](https://leetcode.com/problems/decode-the-message/)                                           | [Link](./lib/easy/2325_decode_the_message.rb)                                           |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index c58c85e9..96ad73ae 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 = '5.5.1'
+  s.version = '5.5.2'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[bin/leetcode-ruby README.md LICENSE]
   s.executable = 'leetcode-ruby'
diff --git a/lib/easy/2325_decode_the_message.rb b/lib/easy/2325_decode_the_message.rb
new file mode 100644
index 00000000..721f7cee
--- /dev/null
+++ b/lib/easy/2325_decode_the_message.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/decode-the-message/
+# @param {String} key
+# @param {String} message
+# @return {String}
+def decode_message(key, message)
+  message.tr(key.chars.uniq.join.gsub(/\s+/, ''), 'a-z')
+end
diff --git a/test/easy/test_2325_decode_the_message.rb b/test/easy/test_2325_decode_the_message.rb
new file mode 100644
index 00000000..015f5595
--- /dev/null
+++ b/test/easy/test_2325_decode_the_message.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/easy/2325_decode_the_message'
+require 'minitest/autorun'
+
+class DecodeTheMessageTest < ::Minitest::Test
+  def test_default
+    assert_equal(
+      'this is a secret',
+      decode_message(
+        'the quick brown fox jumps over the lazy dog',
+        'vkbs bs t suepuv'
+      )
+    )
+    assert_equal(
+      'the five boxing wizards jump quickly',
+      decode_message(
+        'eljuxhpwnyrdgtqkviszcfmabo',
+        'zwx hnfx lqantp mnoeius ycgk vcnjrdb'
+      )
+    )
+  end
+end