diff --git a/src/main/java/balancetalk/module/post/application/PostService.java b/src/main/java/balancetalk/module/post/application/PostService.java
index b1756e446..822526ab8 100644
--- a/src/main/java/balancetalk/module/post/application/PostService.java
+++ b/src/main/java/balancetalk/module/post/application/PostService.java
@@ -92,7 +92,7 @@ public Page<PostResponse> findAll(String token, Pageable pageable) {
                 member.hasVoted(post)));
     }
 
-    @Transactional(readOnly = true)
+    @Transactional
     public PostResponse findById(Long postId, String token) {
         Post post = getCurrentPost(postId);