diff --git a/src/main/java/clap/server/domain/model/task/Task.java b/src/main/java/clap/server/domain/model/task/Task.java
index 4e032ab3..60a76251 100644
--- a/src/main/java/clap/server/domain/model/task/Task.java
+++ b/src/main/java/clap/server/domain/model/task/Task.java
@@ -100,6 +100,7 @@ public void approveTask(Member reviewer, Member processor, LocalDateTime dueDate
         this.dueDate = dueDate;
         this.category = category;
         this.label = label;
+        this.taskCode = toTaskCodeWithApproval(category);
         this.taskStatus = TaskStatus.IN_PROGRESS;
     }
 
@@ -107,6 +108,11 @@ private static String toTaskCode(Category category) {
         return category.getMainCategory().getCode() + category.getCode() + LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyMMddHHmm"));
     }
 
+    private String toTaskCodeWithApproval(Category category) {
+        return category.getMainCategory().getCode() + category.getCode() + super.getCreatedAt().format(DateTimeFormatter.ofPattern("yyMMddHHmm"));
+    }
+
+
     public void updateProcessorOrder(long newProcessorOrder) {
         this.processorOrder = newProcessorOrder;
     }
diff --git a/src/test/java/clap/server/TestDataFactory.java b/src/test/java/clap/server/TestDataFactory.java
index 62ef0a47..e485bb7b 100644
--- a/src/test/java/clap/server/TestDataFactory.java
+++ b/src/test/java/clap/server/TestDataFactory.java
@@ -194,6 +194,7 @@ public static Task createTask(Long id, String taskCode, String title, TaskStatus
                 .requester(createUser())
                 .processor(processor)
                 .label(createLabel())
+                .createdAt(LocalDateTime.now())
                 .build();
     }