diff --git a/app/(app)/post/[id]/index.tsx b/app/(app)/post/[id]/index.tsx
index 1ae9fca..b64113b 100644
--- a/app/(app)/post/[id]/index.tsx
+++ b/app/(app)/post/[id]/index.tsx
@@ -14,7 +14,7 @@ import UserListItem from '../../../../src/components/uis/UserListItem';
 import ControlItem from '../../../../src/components/uis/ControlItem';
 import {useSafeAreaInsets} from 'react-native-safe-area-context';
 import Replies from '../../replies';
-import {useCallback, useRef} from 'react';
+import {useCallback, useRef, useEffect} from 'react';
 import {FlashList} from '@shopify/flash-list';
 import CustomPressable from 'dooboo-ui/uis/CustomPressable';
 import {delayPressIn} from '../../../../src/utils/constants';
@@ -22,17 +22,16 @@ import {useRecoilState} from 'recoil';
 import {authRecoilState} from '../../../../src/recoil/atoms';
 import {useAppLogic} from '../../../../src/providers/AppLogicProvider';
 import {fetchDeletePost, fetchPostById} from '../../../../src/apis/postQueries';
+import {supabase} from '../../../../src/supabase';
 
 const Container = styled.View`
   background-color: ${({theme}) => theme.bg.basic};
-
   flex: 1;
   align-self: stretch;
 `;
 
 const Content = styled.View`
   padding: 24px;
-
   gap: 24px;
 `;
 
@@ -49,9 +48,10 @@ export default function PostDetails(): JSX.Element {
     data: post,
     error,
     isValidating,
+    mutate,
   } = useSWR(id ? `post-${id}` : null, () => fetchPostById(id || ''));
 
-  console.log('post', id)
+  console.log('post', id);
 
   const handleDeletePost = useCallback(async () => {
     if (!post) return;
@@ -93,6 +93,35 @@ export default function PostDetails(): JSX.Element {
     }
   }, [post]);
 
+  useEffect(() => {
+    if (!id) return;
+
+    const channel = supabase
+      .channel('schema-db-changes')
+      .on(
+        'postgres_changes',
+        {
+          event: 'UPDATE',
+          schema: 'public',
+          table: 'posts',
+          filter: `id=eq.${id}`,
+        },
+        async (payload) => {
+          console.log('update', payload);
+          const updatedPost = await fetchPostById(id);
+
+          if (updatedPost) {
+            mutate(updatedPost, false); // Update the post data without revalidation
+          }
+        },
+      )
+      .subscribe();
+
+    return () => {
+      channel.unsubscribe();
+    };
+  }, [id, mutate]);
+
   const content = (() => {
     switch (true) {
       case isValidating && !authId:
diff --git a/app/(app)/post/[id]/update.tsx b/app/(app)/post/[id]/update.tsx
index f9670cd..737e55c 100644
--- a/app/(app)/post/[id]/update.tsx
+++ b/app/(app)/post/[id]/update.tsx
@@ -31,7 +31,7 @@ const Content = styled.View`
 const schema = yup.object().shape({
   title: yup.string().required(t('post.write.titlePlaceholder')),
   content: yup.string().required(t('post.write.contentPlaceholder')),
-  url: yup.string(),
+  url: yup.string().url(t('common.invalidUrl')),
 });
 
 type FormData = yup.InferType<typeof schema>;
@@ -189,6 +189,7 @@ export default function PostUpdate(): JSX.Element {
                   placeholder={t('post.write.urlPlaceholder')}
                   value={value}
                   decoration="boxed"
+                  error={errors.url ? errors.url.message : ''}
                 />
               )}
               rules={{required: true, validate: (value) => !!value}}
diff --git a/app/(app)/post/write.tsx b/app/(app)/post/write.tsx
index 886dc21..2c2804f 100644
--- a/app/(app)/post/write.tsx
+++ b/app/(app)/post/write.tsx
@@ -27,7 +27,7 @@ const Content = styled.View`
 const schema = yup.object().shape({
   title: yup.string().required(t('post.write.titlePlaceholder')),
   content: yup.string().required(t('post.write.contentPlaceholder')),
-  url: yup.string(),
+  url: yup.string().url(t('common.invalidUrl')),
 });
 
 type FormData = yup.InferType<typeof schema>;
@@ -179,6 +179,7 @@ export default function PostWrite(): JSX.Element {
               placeholder={t('post.write.urlPlaceholder')}
               value={value}
               decoration="boxed"
+              error={errors.url ? errors.url.message : ''}
             />
           )}
           rules={{required: true, validate: (value) => !!value}}
diff --git a/assets/langs/en.json b/assets/langs/en.json
index d0c30d1..c9a49c2 100644
--- a/assets/langs/en.json
+++ b/assets/langs/en.json
@@ -1,38 +1,39 @@
 {
   "common": {
     "appErrorMessage": "Communication is not smooth.\nPlease check your network status.",
-    "ok": "OK",
+    "block": "Block",
+    "blockUser": "Block {{user}}",
+    "blockUserDesc": "If you block a user, you will not be able to access the user's content. Do you want to block this user?",
+    "blockUserSuccess": "User has been blocked",
     "cancel": "Cancel",
     "confirm": "Confirm",
+    "delete": "Delete",
+    "deleteSuccess": "Successfully deleted",
     "deletedAccount": "Retired account.",
     "image": "Image",
+    "invalidUrl": "Invalid URL",
     "latest": "Latest",
     "leaveComment": "Leave a comment",
     "noComment": "No comments",
     "notFound": "Not found",
+    "ok": "OK",
     "or": "or",
     "permissionGrantCamera": "Please grant camera permission to take pictures.",
     "post": "Post",
     "profile": "Profile",
+    "report": "Report",
+    "reportSubject": "Report {{subject}}",
     "retry": "Retry",
     "selectFromGallery": "Select from gallery",
     "takeAPhoto": "Take a photo",
+    "unhandledError": "An unhandled error occurred.",
+    "update": "Update",
     "updateApp": "Update App",
+    "user": "User",
     "viewsWithCount": {
       "one": "Views %{count}",
       "other": "Views %{count}"
-    },
-    "reportSubject": "Report {{subject}}",
-    "report": "Report",
-    "block": "Block",
-    "blockUser": "Block {{user}}",
-    "blockUserDesc": "If you block a user, you will not be able to access the user's content. Do you want to block this user?",
-    "blockUserSuccess": "User has been blocked",
-    "delete": "Delete",
-    "user": "User",
-    "deleteSuccess": "Successfully deleted",
-    "unhandledError": "An unhandled error occurred.",
-    "update": "Update"
+    }
   },
   "error": {
     "default": "Error occurred!"
@@ -47,6 +48,10 @@
     "title": "Login Information"
   },
   "post": {
+    "update": {
+      "updateFailed": "Update failed!",
+      "updateSuccess": "Successfully updated!"
+    },
     "write": {
       "content": "Content",
       "contentPlaceholder": "Enter the content",
@@ -58,10 +63,6 @@
       "write": "Write",
       "writeFailed": "Write failed!",
       "writeSuccess": "Successfully written!"
-    },
-    "update": {
-      "updateFailed": "Update failed!",
-      "updateSuccess": "Successfully updated!"
     }
   },
   "settings": {
diff --git a/assets/langs/ko.json b/assets/langs/ko.json
index fe67cb6..d375c7c 100644
--- a/assets/langs/ko.json
+++ b/assets/langs/ko.json
@@ -1,38 +1,39 @@
 {
   "common": {
     "appErrorMessage": "통신이 원활하지 않습니다.\n네트워크 상태를 확인해주세요.",
+    "block": "차단",
+    "blockUser": "{{user}} 차단",
+    "blockUserDesc": "사용자를 차단하면 해당 사용자의 콘텐츠에 접근할 수 없습니다. 이 사용자를 차단하시겠습니까?",
+    "blockUserSuccess": "사용자가 차단되었습니다",
     "cancel": "취소",
-    "ok": "확인",
     "confirm": "확인",
+    "delete": "삭제",
+    "deleteSuccess": "성공적으로 삭제되었습니다",
     "deletedAccount": "탈퇴한 계정입니다.",
     "image": "이미지",
+    "invalidUrl": "유효하지 않은 URL",
     "latest": "최신순",
     "leaveComment": "댓글 남기기",
     "noComment": "댓글이 없습니다",
     "notFound": "찾을 수 없습니다",
+    "ok": "확인",
     "or": "또는",
     "permissionGrantCamera": "촬영을 위해 카메라 권한을 부여해주세요.",
     "post": "게시판",
     "profile": "프로필",
+    "report": "신고",
+    "reportSubject": "Report {{subject}}",
     "retry": "재시도",
     "selectFromGallery": "갤러리에서 선택",
     "takeAPhoto": "사진 찍기",
+    "unhandledError": "처리되지 않은 오류가 발생했습니다.",
+    "update": "업데이트",
     "updateApp": "앱 업데이트",
+    "user": "사용자",
     "viewsWithCount": {
       "one": "조회수 %{count}",
       "other": "조회수 %{count}"
-    },
-    "reportSubject": "Report {{subject}}",
-    "report": "신고",
-    "block": "차단",
-    "blockUser": "{{user}} 차단",
-    "blockUserDesc": "사용자를 차단하면 해당 사용자의 콘텐츠에 접근할 수 없습니다. 이 사용자를 차단하시겠습니까?",
-    "blockUserSuccess": "사용자가 차단되었습니다",
-    "delete": "삭제",
-    "user": "사용자",
-    "deleteSuccess": "성공적으로 삭제되었습니다",
-    "unhandledError": "처리되지 않은 오류가 발생했습니다.",
-    "update": "업데이트"
+    }
   },
   "error": {
     "default": "오류가 발생했습니다!"
@@ -47,6 +48,10 @@
     "title": "로그인 정보"
   },
   "post": {
+    "update": {
+      "updateFailed": "업데이트에 실패했습니다!",
+      "updateSuccess": "성공적으로 업데이트되었습니다!"
+    },
     "write": {
       "content": "내용",
       "contentPlaceholder": "내용을 입력하세요",
@@ -58,10 +63,6 @@
       "write": "글쓰기",
       "writeFailed": "작성에 실패했습니다!",
       "writeSuccess": "성공적으로 작성되었습니다!"
-    },
-    "update": {
-      "updateFailed": "업데이트에 실패했습니다!",
-      "updateSuccess": "성공적으로 업데이트되었습니다!"
     }
   },
   "settings": {