diff --git a/docs/reference/models/blocks/basic_components.html b/docs/reference/models/blocks/basic_components.html
index 8a48c9a6a..09ba7e190 100644
--- a/docs/reference/models/blocks/basic_components.html
+++ b/docs/reference/models/blocks/basic_components.html
@@ -378,6 +378,7 @@ <h3>Inherited members</h3>
     ):
         &#34;&#34;&#34;
         A feedback button element object for either positive or negative feedback.
+        https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields
 
         Args:
             text (required): An object containing some text. Maximum length for this field is 75 characters.
@@ -410,7 +411,8 @@ <h3>Inherited members</h3>
         return json</code></pre>
 </details>
 <div class="desc"><p>The base class for JSON serializable class objects</p>
-<p>A feedback button element object for either positive or negative feedback.</p>
+<p>A feedback button element object for either positive or negative feedback.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields">https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>text</code></strong> :&ensp;<code>required</code></dt>
diff --git a/docs/reference/models/blocks/block_elements.html b/docs/reference/models/blocks/block_elements.html
index ac23c73a1..375ee07ce 100644
--- a/docs/reference/models/blocks/block_elements.html
+++ b/docs/reference/models/blocks/block_elements.html
@@ -1868,6 +1868,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;Buttons to indicate positive or negative feedback.
+        https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element
 
         Args:
             action_id (required): An identifier for this action.
@@ -1885,7 +1886,8 @@ <h3>Inherited members</h3>
 </details>
 <div class="desc"><p>Block Elements are things that exists inside of your Blocks.
 <a href="https://docs.slack.dev/reference/block-kit/block-elements/">https://docs.slack.dev/reference/block-kit/block-elements/</a></p>
-<p>Buttons to indicate positive or negative feedback.</p>
+<p>Buttons to indicate positive or negative feedback.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element">https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>action_id</code></strong> :&ensp;<code>required</code></dt>
@@ -2074,6 +2076,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;An icon button to perform actions.
+        https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element
 
         Args:
             action_id: An identifier for this action.
@@ -2103,7 +2106,8 @@ <h3>Inherited members</h3>
 </details>
 <div class="desc"><p>Block Elements are things that exists inside of your Blocks.
 <a href="https://docs.slack.dev/reference/block-kit/block-elements/">https://docs.slack.dev/reference/block-kit/block-elements/</a></p>
-<p>An icon button to perform actions.</p>
+<p>An icon button to perform actions.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element">https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>action_id</code></strong></dt>
@@ -3225,11 +3229,13 @@ <h3>Inherited members</h3>
             italic: Optional[bool] = None,
             strike: Optional[bool] = None,
             code: Optional[bool] = None,
+            underline: Optional[bool] = None,
         ):
             self.bold = bold
             self.italic = italic
             self.strike = strike
             self.code = code
+            self.underline = underline
 
         def to_dict(self, *args) -&gt; dict:
             result = {
@@ -3237,6 +3243,7 @@ <h3>Inherited members</h3>
                 &#34;italic&#34;: self.italic,
                 &#34;strike&#34;: self.strike,
                 &#34;code&#34;: self.code,
+                &#34;underline&#34;: self.underline,
             }
             return {k: v for k, v in result.items() if v is not None}
 
diff --git a/docs/reference/models/blocks/blocks.html b/docs/reference/models/blocks/blocks.html
index e01a02436..f266b5cad 100644
--- a/docs/reference/models/blocks/blocks.html
+++ b/docs/reference/models/blocks/blocks.html
@@ -433,6 +433,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;Displays actions as contextual info, which can include both feedback buttons and icon buttons.
+        https://docs.slack.dev/reference/block-kit/blocks/context-actions-block
 
         Args:
             elements (required): An array of feedback_buttons or icon_button block elements. Maximum number of items is 5.
@@ -457,7 +458,8 @@ <h3>Inherited members</h3>
 <div class="desc"><p>Blocks are a series of components that can be combined
 to create visually rich and compellingly interactive messages.
 <a href="https://docs.slack.dev/reference/block-kit/blocks">https://docs.slack.dev/reference/block-kit/blocks</a></p>
-<p>Displays actions as contextual info, which can include both feedback buttons and icon buttons.</p>
+<p>Displays actions as contextual info, which can include both feedback buttons and icon buttons.
+<a href="https://docs.slack.dev/reference/block-kit/blocks/context-actions-block">https://docs.slack.dev/reference/block-kit/blocks/context-actions-block</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>elements</code></strong> :&ensp;<code>required</code></dt>
diff --git a/docs/reference/models/blocks/index.html b/docs/reference/models/blocks/index.html
index ad0c7b088..182ab927a 100644
--- a/docs/reference/models/blocks/index.html
+++ b/docs/reference/models/blocks/index.html
@@ -1369,6 +1369,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;Displays actions as contextual info, which can include both feedback buttons and icon buttons.
+        https://docs.slack.dev/reference/block-kit/blocks/context-actions-block
 
         Args:
             elements (required): An array of feedback_buttons or icon_button block elements. Maximum number of items is 5.
@@ -1393,7 +1394,8 @@ <h3>Inherited members</h3>
 <div class="desc"><p>Blocks are a series of components that can be combined
 to create visually rich and compellingly interactive messages.
 <a href="https://docs.slack.dev/reference/block-kit/blocks">https://docs.slack.dev/reference/block-kit/blocks</a></p>
-<p>Displays actions as contextual info, which can include both feedback buttons and icon buttons.</p>
+<p>Displays actions as contextual info, which can include both feedback buttons and icon buttons.
+<a href="https://docs.slack.dev/reference/block-kit/blocks/context-actions-block">https://docs.slack.dev/reference/block-kit/blocks/context-actions-block</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>elements</code></strong> :&ensp;<code>required</code></dt>
@@ -2762,6 +2764,7 @@ <h3>Inherited members</h3>
     ):
         &#34;&#34;&#34;
         A feedback button element object for either positive or negative feedback.
+        https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields
 
         Args:
             text (required): An object containing some text. Maximum length for this field is 75 characters.
@@ -2794,7 +2797,8 @@ <h3>Inherited members</h3>
         return json</code></pre>
 </details>
 <div class="desc"><p>The base class for JSON serializable class objects</p>
-<p>A feedback button element object for either positive or negative feedback.</p>
+<p>A feedback button element object for either positive or negative feedback.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields">https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element#button-object-fields</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>text</code></strong> :&ensp;<code>required</code></dt>
@@ -2901,6 +2905,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;Buttons to indicate positive or negative feedback.
+        https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element
 
         Args:
             action_id (required): An identifier for this action.
@@ -2918,7 +2923,8 @@ <h3>Inherited members</h3>
 </details>
 <div class="desc"><p>Block Elements are things that exists inside of your Blocks.
 <a href="https://docs.slack.dev/reference/block-kit/block-elements/">https://docs.slack.dev/reference/block-kit/block-elements/</a></p>
-<p>Buttons to indicate positive or negative feedback.</p>
+<p>Buttons to indicate positive or negative feedback.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element">https://docs.slack.dev/reference/block-kit/block-elements/feedback-buttons-element</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>action_id</code></strong> :&ensp;<code>required</code></dt>
@@ -3196,6 +3202,7 @@ <h3>Inherited members</h3>
         **others: dict,
     ):
         &#34;&#34;&#34;An icon button to perform actions.
+        https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element
 
         Args:
             action_id: An identifier for this action.
@@ -3225,7 +3232,8 @@ <h3>Inherited members</h3>
 </details>
 <div class="desc"><p>Block Elements are things that exists inside of your Blocks.
 <a href="https://docs.slack.dev/reference/block-kit/block-elements/">https://docs.slack.dev/reference/block-kit/block-elements/</a></p>
-<p>An icon button to perform actions.</p>
+<p>An icon button to perform actions.
+<a href="https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element">https://docs.slack.dev/reference/block-kit/block-elements/icon-button-element</a></p>
 <h2 id="args">Args</h2>
 <dl>
 <dt><strong><code>action_id</code></strong></dt>
@@ -5617,11 +5625,13 @@ <h3>Inherited members</h3>
             italic: Optional[bool] = None,
             strike: Optional[bool] = None,
             code: Optional[bool] = None,
+            underline: Optional[bool] = None,
         ):
             self.bold = bold
             self.italic = italic
             self.strike = strike
             self.code = code
+            self.underline = underline
 
         def to_dict(self, *args) -&gt; dict:
             result = {
@@ -5629,6 +5639,7 @@ <h3>Inherited members</h3>
                 &#34;italic&#34;: self.italic,
                 &#34;strike&#34;: self.strike,
                 &#34;code&#34;: self.code,
+                &#34;underline&#34;: self.underline,
             }
             return {k: v for k, v in result.items() if v is not None}
 
diff --git a/docs/reference/scim/async_client.html b/docs/reference/scim/async_client.html
index 426ca9299..c91441c29 100644
--- a/docs/reference/scim/async_client.html
+++ b/docs/reference/scim/async_client.html
@@ -163,9 +163,9 @@ <h2 class="section-title" id="header-classes">Classes</h2>
             await self.api_call(
                 http_verb=&#34;PATCH&#34;,
                 path=f&#34;Users/{quote(id)}&#34;,
-                body_params=partial_user.to_dict()
-                if isinstance(partial_user, User)
-                else _to_dict_without_not_given(partial_user),
+                body_params=(
+                    partial_user.to_dict() if isinstance(partial_user, User) else _to_dict_without_not_given(partial_user)
+                ),
             )
         )
 
@@ -228,9 +228,11 @@ <h2 class="section-title" id="header-classes">Classes</h2>
             await self.api_call(
                 http_verb=&#34;PATCH&#34;,
                 path=f&#34;Groups/{quote(id)}&#34;,
-                body_params=partial_group.to_dict()
-                if isinstance(partial_group, Group)
-                else _to_dict_without_not_given(partial_group),
+                body_params=(
+                    partial_group.to_dict()
+                    if isinstance(partial_group, Group)
+                    else _to_dict_without_not_given(partial_group)
+                ),
             )
         )
 
@@ -620,9 +622,11 @@ <h3>Methods</h3>
         await self.api_call(
             http_verb=&#34;PATCH&#34;,
             path=f&#34;Groups/{quote(id)}&#34;,
-            body_params=partial_group.to_dict()
-            if isinstance(partial_group, Group)
-            else _to_dict_without_not_given(partial_group),
+            body_params=(
+                partial_group.to_dict()
+                if isinstance(partial_group, Group)
+                else _to_dict_without_not_given(partial_group)
+            ),
         )
     )</code></pre>
 </details>
@@ -641,9 +645,9 @@ <h3>Methods</h3>
         await self.api_call(
             http_verb=&#34;PATCH&#34;,
             path=f&#34;Users/{quote(id)}&#34;,
-            body_params=partial_user.to_dict()
-            if isinstance(partial_user, User)
-            else _to_dict_without_not_given(partial_user),
+            body_params=(
+                partial_user.to_dict() if isinstance(partial_user, User) else _to_dict_without_not_given(partial_user)
+            ),
         )
     )</code></pre>
 </details>
diff --git a/docs/reference/scim/v1/async_client.html b/docs/reference/scim/v1/async_client.html
index 59fb723f3..6a971bb80 100644
--- a/docs/reference/scim/v1/async_client.html
+++ b/docs/reference/scim/v1/async_client.html
@@ -163,9 +163,9 @@ <h2 class="section-title" id="header-classes">Classes</h2>
             await self.api_call(
                 http_verb=&#34;PATCH&#34;,
                 path=f&#34;Users/{quote(id)}&#34;,
-                body_params=partial_user.to_dict()
-                if isinstance(partial_user, User)
-                else _to_dict_without_not_given(partial_user),
+                body_params=(
+                    partial_user.to_dict() if isinstance(partial_user, User) else _to_dict_without_not_given(partial_user)
+                ),
             )
         )
 
@@ -228,9 +228,11 @@ <h2 class="section-title" id="header-classes">Classes</h2>
             await self.api_call(
                 http_verb=&#34;PATCH&#34;,
                 path=f&#34;Groups/{quote(id)}&#34;,
-                body_params=partial_group.to_dict()
-                if isinstance(partial_group, Group)
-                else _to_dict_without_not_given(partial_group),
+                body_params=(
+                    partial_group.to_dict()
+                    if isinstance(partial_group, Group)
+                    else _to_dict_without_not_given(partial_group)
+                ),
             )
         )
 
@@ -620,9 +622,11 @@ <h3>Methods</h3>
         await self.api_call(
             http_verb=&#34;PATCH&#34;,
             path=f&#34;Groups/{quote(id)}&#34;,
-            body_params=partial_group.to_dict()
-            if isinstance(partial_group, Group)
-            else _to_dict_without_not_given(partial_group),
+            body_params=(
+                partial_group.to_dict()
+                if isinstance(partial_group, Group)
+                else _to_dict_without_not_given(partial_group)
+            ),
         )
     )</code></pre>
 </details>
@@ -641,9 +645,9 @@ <h3>Methods</h3>
         await self.api_call(
             http_verb=&#34;PATCH&#34;,
             path=f&#34;Users/{quote(id)}&#34;,
-            body_params=partial_user.to_dict()
-            if isinstance(partial_user, User)
-            else _to_dict_without_not_given(partial_user),
+            body_params=(
+                partial_user.to_dict() if isinstance(partial_user, User) else _to_dict_without_not_given(partial_user)
+            ),
         )
     )</code></pre>
 </details>
diff --git a/docs/reference/socket_mode/websocket_client/index.html b/docs/reference/socket_mode/websocket_client/index.html
index fe43e29b1..b90aa9137 100644
--- a/docs/reference/socket_mode/websocket_client/index.html
+++ b/docs/reference/socket_mode/websocket_client/index.html
@@ -213,10 +213,10 @@ <h2 class="section-title" id="header-classes">Classes</h2>
 
         self.current_session = websocket.WebSocketApp(
             self.wss_uri,
-            on_open=on_open,  # type: ignore[arg-type]
-            on_message=on_message,  # type: ignore[arg-type]
-            on_error=on_error,  # type: ignore[arg-type]
-            on_close=on_close,  # type: ignore[arg-type]
+            on_open=on_open,
+            on_message=on_message,
+            on_error=on_error,
+            on_close=on_close,
         )
         self.auto_reconnect_enabled = self.default_auto_reconnect_enabled
 
@@ -441,10 +441,10 @@ <h3>Methods</h3>
 
     self.current_session = websocket.WebSocketApp(
         self.wss_uri,
-        on_open=on_open,  # type: ignore[arg-type]
-        on_message=on_message,  # type: ignore[arg-type]
-        on_error=on_error,  # type: ignore[arg-type]
-        on_close=on_close,  # type: ignore[arg-type]
+        on_open=on_open,
+        on_message=on_message,
+        on_error=on_error,
+        on_close=on_close,
     )
     self.auto_reconnect_enabled = self.default_auto_reconnect_enabled
 
diff --git a/slack_sdk/version.py b/slack_sdk/version.py
index a23f01f83..c787aa278 100644
--- a/slack_sdk/version.py
+++ b/slack_sdk/version.py
@@ -1,3 +1,3 @@
 """Check the latest version at https://pypi.org/project/slack-sdk/"""
 
-__version__ = "3.37.0"
+__version__ = "3.38.0"