diff --git a/slack/web/classes/objects.py b/slack/web/classes/objects.py
index d87da33ba..e19a38b96 100644
--- a/slack/web/classes/objects.py
+++ b/slack/web/classes/objects.py
@@ -250,6 +250,7 @@ def __init__(
         text: Union[str, dict, TextObject],
         confirm: Union[str, dict, PlainTextObject] = "Yes",
         deny: Union[str, dict, PlainTextObject] = "No",
+        style: str = None,
     ):
         """
         An object that defines a dialog that provides a confirmation step to any
@@ -261,12 +262,14 @@ def __init__(
         self._text = TextObject.parse(text, default_type=MarkdownTextObject.type)
         self._confirm = TextObject.parse(confirm, default_type=PlainTextObject.type)
         self._deny = TextObject.parse(deny, default_type=PlainTextObject.type)
+        self._style = style
 
         # for backward-compatibility with version 2.0-2.5, the following fields return str values
         self.title = self._title.text if self._title else None
         self.text = self._text.text if self._text else None
         self.confirm = self._confirm.text if self._confirm else None
         self.deny = self._deny.text if self._deny else None
+        self.style = self._style
 
     @JsonValidator(f"title attribute cannot exceed {title_max_length} characters")
     def title_length(self):
@@ -286,6 +289,10 @@ def confirm_length(self):
     def deny_length(self):
         return self._deny is None or len(self._deny.text) <= self.deny_max_length
 
+    @JsonValidator('style for confirm must be either "primary" or "danger"')
+    def _validate_confirm_style(self):
+        return self._style is None or self._style in ["primary", "danger"]
+
     def to_dict(self, option_type: str = "block") -> dict:
         if option_type == "action":
             # deliberately skipping JSON validators here - can't find documentation
@@ -315,6 +322,8 @@ def to_dict(self, option_type: str = "block") -> dict:
                 json["confirm"] = self._confirm.to_dict()
             if self._deny:
                 json["deny"] = self._deny.to_dict()
+            if self._style:
+                json["style"] = self._style
             return json
 
 
diff --git a/tests/web/classes/test_objects.py b/tests/web/classes/test_objects.py
index a9dea1a08..13ea887cd 100644
--- a/tests/web/classes/test_objects.py
+++ b/tests/web/classes/test_objects.py
@@ -476,3 +476,47 @@ def test_options_length(self):
                 "text"
             )
 
+    def test_confirm_style(self):
+        obj = ConfirmObject.parse({
+            "title": {
+                "type": "plain_text",
+                "text": "Are you sure?"
+            },
+            "text": {
+                "type": "mrkdwn",
+                "text": "Wouldn't you prefer a good game of _chess_?"
+            },
+            "confirm": {
+                "type": "plain_text",
+                "text": "Do it"
+            },
+            "deny": {
+                "type": "plain_text",
+                "text": "Stop, I've changed my mind!"
+            },
+            "style": "primary"
+        })
+        obj.validate_json()
+        self.assertEqual("primary", obj.style)
+
+    def test_confirm_style_validation(self):
+        with self.assertRaises(SlackObjectFormationError):
+            ConfirmObject.parse({
+                "title": {
+                    "type": "plain_text",
+                    "text": "Are you sure?"
+                },
+                "text": {
+                    "type": "mrkdwn",
+                    "text": "Wouldn't you prefer a good game of _chess_?"
+                },
+                "confirm": {
+                    "type": "plain_text",
+                    "text": "Do it"
+                },
+                "deny": {
+                    "type": "plain_text",
+                    "text": "Stop, I've changed my mind!"
+                },
+                "style": "something-wrong"
+            }).validate_json()