diff --git a/src/main/java/clap/server/adapter/inbound/web/dto/task/request/UpdateTaskLabelRequest.java b/src/main/java/clap/server/adapter/inbound/web/dto/task/request/UpdateTaskLabelRequest.java
index aadfaf5d..5943b1bc 100644
--- a/src/main/java/clap/server/adapter/inbound/web/dto/task/request/UpdateTaskLabelRequest.java
+++ b/src/main/java/clap/server/adapter/inbound/web/dto/task/request/UpdateTaskLabelRequest.java
@@ -6,7 +6,6 @@
 public record UpdateTaskLabelRequest(
 
         @Schema(description = "변경할 구분 고유 ID", example = "1")
-        @NotNull
         Long labelId
 ) {
 }
diff --git a/src/main/java/clap/server/application/service/task/UpdateTaskContentService.java b/src/main/java/clap/server/application/service/task/UpdateTaskContentService.java
index d6a1e90c..381b36ea 100644
--- a/src/main/java/clap/server/application/service/task/UpdateTaskContentService.java
+++ b/src/main/java/clap/server/application/service/task/UpdateTaskContentService.java
@@ -96,7 +96,7 @@ public void updateTaskLabel(Long taskId, Long memberId, UpdateTaskLabelRequest r
         memberService.findActiveMember(memberId);
         memberService.findReviewer(memberId);
         Task task = taskService.findById(taskId);
-        Label label = labelService.findById(request.labelId());
+        Label label = request.labelId() != null ? labelService.findById(request.labelId()) : null;
 
         task.updateLabel(label);
         taskService.upsert(task);