diff --git a/slack_sdk/web/async_client.py b/slack_sdk/web/async_client.py
index 2840b75f7..b0859f336 100644
--- a/slack_sdk/web/async_client.py
+++ b/slack_sdk/web/async_client.py
@@ -2855,14 +2855,22 @@ async def canvases_create(
         self,
         *,
         title: Optional[str] = None,
-        document_content: Dict[str, str],
+        document_content: Optional[Dict[str, str]] = None,
+        channel_id: Optional[str] = None,
         **kwargs,
     ) -> AsyncSlackResponse:
         """Create Canvas for a user.
 
         https://docs.slack.dev/reference/methods/canvases.create
         """
-        kwargs.update({"title": title, "document_content": document_content})
+        kwargs.update(
+            {
+                "title": title,
+                "document_content": document_content,
+                "channel_id": channel_id,
+            }
+        )
+        kwargs = _remove_none_values(kwargs)
         return await self.api_call("canvases.create", json=kwargs)
 
     async def canvases_edit(
diff --git a/slack_sdk/web/client.py b/slack_sdk/web/client.py
index 9f4c7fa16..6534c8732 100644
--- a/slack_sdk/web/client.py
+++ b/slack_sdk/web/client.py
@@ -2845,14 +2845,22 @@ def canvases_create(
         self,
         *,
         title: Optional[str] = None,
-        document_content: Dict[str, str],
+        document_content: Optional[Dict[str, str]] = None,
+        channel_id: Optional[str] = None,
         **kwargs,
     ) -> SlackResponse:
         """Create Canvas for a user.
 
         https://docs.slack.dev/reference/methods/canvases.create
         """
-        kwargs.update({"title": title, "document_content": document_content})
+        kwargs.update(
+            {
+                "title": title,
+                "document_content": document_content,
+                "channel_id": channel_id,
+            }
+        )
+        kwargs = _remove_none_values(kwargs)
         return self.api_call("canvases.create", json=kwargs)
 
     def canvases_edit(
diff --git a/slack_sdk/web/legacy_client.py b/slack_sdk/web/legacy_client.py
index 5c4fa90c1..03110af54 100644
--- a/slack_sdk/web/legacy_client.py
+++ b/slack_sdk/web/legacy_client.py
@@ -2856,14 +2856,22 @@ def canvases_create(
         self,
         *,
         title: Optional[str] = None,
-        document_content: Dict[str, str],
+        document_content: Optional[Dict[str, str]] = None,
+        channel_id: Optional[str] = None,
         **kwargs,
     ) -> Union[Future, SlackResponse]:
         """Create Canvas for a user.
 
         https://docs.slack.dev/reference/methods/canvases.create
         """
-        kwargs.update({"title": title, "document_content": document_content})
+        kwargs.update(
+            {
+                "title": title,
+                "document_content": document_content,
+                "channel_id": channel_id,
+            }
+        )
+        kwargs = _remove_none_values(kwargs)
         return self.api_call("canvases.create", json=kwargs)
 
     def canvases_edit(
diff --git a/tests/slack_sdk_async/web/test_web_client_coverage.py b/tests/slack_sdk_async/web/test_web_client_coverage.py
index 6ebe28700..6b63b28d6 100644
--- a/tests/slack_sdk_async/web/test_web_client_coverage.py
+++ b/tests/slack_sdk_async/web/test_web_client_coverage.py
@@ -626,8 +626,8 @@ async def run_method(self, method_name, method, async_method):
                 self.api_methods_to_call.remove(method(id="R111")["method"])
                 await async_method(id="R111")
             elif method_name == "canvases_create":
-                self.api_methods_to_call.remove(method(document_content={})["method"])
-                await async_method(document_content={})
+                self.api_methods_to_call.remove(method(channel_id="C123")["method"])
+                await async_method(channel_id="C123")
             elif method_name == "conversations_canvases_create":
                 self.api_methods_to_call.remove(method(channel_id="C123", document_content={})["method"])
                 await async_method(channel_id="C123", document_content={})