diff --git a/.changeset/great-seas-swim.md b/.changeset/great-seas-swim.md
new file mode 100644
index 000000000..74b453bde
--- /dev/null
+++ b/.changeset/great-seas-swim.md
@@ -0,0 +1,5 @@
+---
+"@slack/web-api": patch
+---
+
+fix: update SlackListsItemFieldMessage to support single and array message shapes
diff --git a/packages/web-api/src/types/request/slackLists.ts b/packages/web-api/src/types/request/slackLists.ts
index 21cc8d431..463b64692 100644
--- a/packages/web-api/src/types/request/slackLists.ts
+++ b/packages/web-api/src/types/request/slackLists.ts
@@ -58,11 +58,23 @@ export interface SlackListsItemFieldLink {
 }
 
 /**
- * @description Message field with message URLs.
+ * @description A single message object returned by the Slack API.
+ */
+export interface SlackListsItemMessage {
+  text?: string;
+  ts?: string;
+  user?: string;
+  team?: string;
+  type?: string;
+}
+
+/**
+ * @description Message field. The API may return either a single message object
+ * or an array of message objects.
  */
 export interface SlackListsItemFieldMessage {
   column_id: string;
-  message: string[];
+  message: SlackListsItemMessage | SlackListsItemMessage[];
 }
 
 /**