diff --git a/lib/shared/threads/protocols/farcaster-thread-protocol.js b/lib/shared/threads/protocols/farcaster-thread-protocol.js
--- a/lib/shared/threads/protocols/farcaster-thread-protocol.js
+++ b/lib/shared/threads/protocols/farcaster-thread-protocol.js
@@ -955,15 +955,42 @@
     utils: PinMessageUtils,
   ): Promise<void> => {
     const { messageID, threadInfo, action } = input;
-    const { farcasterPinMessage } = utils;
+    const { farcasterPinMessage, dispatch, viewerID } = utils;
+    invariant(viewerID, 'Viewer ID should be present');
 
     const conversationId = conversationIDFromFarcasterThreadID(threadInfo.id);
+    const time = Date.now();
 
     await farcasterPinMessage({
       conversationId,
       messageId: messageID,
       action,
     });
+
+    const currentPinnedMessageIDs = threadInfo.pinnedMessageIDs ?? [];
+    // Farcaster supports only one pinned message at a time
+    const updatedPinnedMessageIDs =
+      action === 'pin'
+        ? [messageID]
+        : currentPinnedMessageIDs.filter(id => id !== messageID);
+
+    const updateInfos = [
+      {
+        type: updateTypes.UPDATE_THREAD,
+        id: uuid.v4(),
+        time,
+        threadInfo: {
+          ...threadInfo,
+          pinnedMessageIDs: updatedPinnedMessageIDs,
+          pinnedCount: updatedPinnedMessageIDs.length,
+        },
+      },
+    ];
+
+    dispatch({
+      type: processFarcasterOpsActionType,
+      payload: { rawMessageInfos: [], updateInfos },
+    });
   },
 
   fetchPinnedMessages: async (
diff --git a/lib/shared/threads/thread-spec.js b/lib/shared/threads/thread-spec.js
--- a/lib/shared/threads/thread-spec.js
+++ b/lib/shared/threads/thread-spec.js
@@ -380,13 +380,15 @@
 
 export type ProtocolPinMessageInput = {
   +messageID: string,
-  +threadInfo: ThreadInfo,
+  +threadInfo: RawThreadInfo,
   +action: 'pin' | 'unpin',
 };
 export type PinMessageUtils = {
   +keyserverToggleMessagePin: ToggleMessagePinRequest => Promise<ToggleMessagePinResult>,
   +farcasterPinMessage: PinMessageInput => Promise<void>,
   +dispatchActionPromise: DispatchActionPromise,
+  +dispatch: Dispatch,
+  +viewerID: ?string,
 };
 
 export type ProtocolFetchPinnedMessagesInput = {
diff --git a/lib/utils/pin-message-utils.js b/lib/utils/pin-message-utils.js
--- a/lib/utils/pin-message-utils.js
+++ b/lib/utils/pin-message-utils.js
@@ -3,6 +3,7 @@
 import * as React from 'react';
 
 import { useDispatchActionPromise } from './redux-promise-utils.js';
+import { useDispatch, useSelector } from './redux-utils.js';
 import { useGetLatestMessageEdit } from '../hooks/latest-message-edit.js';
 import {
   useFetchPinnedMessages,
@@ -15,29 +16,40 @@
 
 function usePinMessageAction(): (
   messageID: string,
-  threadInfo: ThreadInfo,
+  threadID: string,
   action: 'pin' | 'unpin',
 ) => Promise<void> {
   const keyserverToggleMessagePin = useToggleMessagePin();
   const farcasterPinMessage = usePinMessage();
   const dispatchActionPromise = useDispatchActionPromise();
+  const dispatch = useDispatch();
+  const viewerID = useSelector(
+    state => state.currentUserInfo && state.currentUserInfo.id,
+  );
+  const threadInfos = useSelector(state => state.threadStore.threadInfos);
 
   return React.useCallback(
-    async (
-      messageID: string,
-      threadInfo: ThreadInfo,
-      action: 'pin' | 'unpin',
-    ) => {
+    async (messageID: string, threadID: string, action: 'pin' | 'unpin') => {
+      const threadInfo = threadInfos[threadID];
       await threadSpecs[threadInfo.type].protocol().pinMessage(
         { messageID, threadInfo, action },
         {
           keyserverToggleMessagePin,
           farcasterPinMessage,
           dispatchActionPromise,
+          dispatch,
+          viewerID,
         },
       );
     },
-    [keyserverToggleMessagePin, farcasterPinMessage, dispatchActionPromise],
+    [
+      keyserverToggleMessagePin,
+      farcasterPinMessage,
+      dispatchActionPromise,
+      dispatch,
+      viewerID,
+      threadInfos,
+    ],
   );
 }
 
diff --git a/native/chat/toggle-pin-modal.react.js b/native/chat/toggle-pin-modal.react.js
--- a/native/chat/toggle-pin-modal.react.js
+++ b/native/chat/toggle-pin-modal.react.js
@@ -59,12 +59,12 @@
 
   const onPress = React.useCallback(() => {
     invariant(messageInfo.id, 'messageInfo.id should be defined');
-    void pinMessageAction(messageInfo.id, threadInfo, modalInfo.action);
+    void pinMessageAction(messageInfo.id, threadInfo.id, modalInfo.action);
     navigation.goBack();
   }, [
     pinMessageAction,
     messageInfo.id,
-    threadInfo,
+    threadInfo.id,
     modalInfo.action,
     navigation,
   ]);
diff --git a/web/modals/chat/toggle-pin-modal.react.js b/web/modals/chat/toggle-pin-modal.react.js
--- a/web/modals/chat/toggle-pin-modal.react.js
+++ b/web/modals/chat/toggle-pin-modal.react.js
@@ -76,15 +76,15 @@
     );
     void pinMessageAction(
       engagementTargetMessageID,
-      threadInfo,
+      threadInfo.id,
       modalInfo.action,
     );
     popModal();
   }, [
+    threadInfo.id,
     modalInfo.action,
     pinMessageAction,
     engagementTargetMessageID,
-    threadInfo,
     popModal,
   ]);