diff --git a/docs/reference/async_app.html b/docs/reference/async_app.html
index 07c1f3627..ad9192253 100644
--- a/docs/reference/async_app.html
+++ b/docs/reference/async_app.html
@@ -39,7 +39,7 @@ <h1 class="title">Module <code>slack_bolt.async_app</code></h1>
 <p>Module for creating asyncio based apps</p>
 <h3 id="creating-an-async-app">Creating an async app</h3>
 <p>If you'd prefer to build your app with <a href="https://docs.python.org/3/library/asyncio.html">asyncio</a>, you can import the <a href="https://docs.aiohttp.org/en/stable/">AIOHTTP</a> library and call the <code><a title="slack_bolt.async_app.AsyncApp" href="#slack_bolt.async_app.AsyncApp">AsyncApp</a></code> constructor. Within async apps, you can use the async/await pattern.</p>
-<pre><code class="language-bash"># Python 3.6+ required
+<pre><code class="language-bash"># Python 3.7+ required
 python -m venv .venv
 source .venv/bin/activate
 
diff --git a/docs/reference/logger/messages.html b/docs/reference/logger/messages.html
index 3c8d67a31..85e0d94dd 100644
--- a/docs/reference/logger/messages.html
+++ b/docs/reference/logger/messages.html
@@ -208,14 +208,14 @@ <h2 class="section-title" id="header-functions">Functions</h2>
 <div class="desc"></div>
 </dd>
 <dt id="slack_bolt.logger.messages.error_message_event_type"><code class="name flex">
-<span>def <span class="ident">error_message_event_type</span></span>(<span>event_type: str) ‑> str</span>
+<span>def <span class="ident">error_message_event_type</span></span>(<span>event_type: str | re.Pattern) ‑> str</span>
 </code></dt>
 <dd>
 <details class="source">
 <summary>
 <span>Expand source code</span>
 </summary>
-<pre><code class="python">def error_message_event_type(event_type: str) -&gt; str:
+<pre><code class="python">def error_message_event_type(event_type: Union[str, Pattern]) -&gt; str:
     return (
         f&#39;Although the document mentions &#34;{event_type}&#34;, &#39;
         &#39;it is not a valid event type. Use &#34;message&#34; instead. &#39;
diff --git a/docs/reference/util/utils.html b/docs/reference/util/utils.html
index 33e6b1de2..85d336513 100644
--- a/docs/reference/util/utils.html
+++ b/docs/reference/util/utils.html
@@ -83,19 +83,7 @@ <h2 class="section-title" id="header-functions">Functions</h2>
 <span>Expand source code</span>
 </summary>
 <pre><code class="python">def create_copy(original: Any) -&gt; Any:
-    if sys.version_info.major == 3 and sys.version_info.minor &lt;= 6:
-        # NOTE: Unfortunately, copy.deepcopy doesn&#39;t work in Python 3.6.5.
-        # --------------------
-        # &gt;     rv = reductor(4)
-        # E     TypeError: can&#39;t pickle _thread.RLock objects
-        # ../../.pyenv/versions/3.6.10/lib/python3.6/copy.py:169: TypeError
-        # --------------------
-        # As a workaround, this operation uses shallow copies in Python 3.6.
-        # If your code modifies the shared data in threads / async functions, race conditions may arise.
-        # Please consider upgrading Python major version to 3.7+ if you encounter some issues due to this.
-        return copy.copy(original)
-    else:
-        return copy.deepcopy(original)</code></pre>
+    return copy.deepcopy(original)</code></pre>
 </details>
 <div class="desc"></div>
 </dd>
diff --git a/slack_bolt/version.py b/slack_bolt/version.py
index b996e1572..7f9c19341 100644
--- a/slack_bolt/version.py
+++ b/slack_bolt/version.py
@@ -1,3 +1,3 @@
 """Check the latest version at https://pypi.org/project/slack-bolt/"""
 
-__version__ = "1.24.0"
+__version__ = "1.25.0"