diff --git a/app/tags/schemas.py b/app/tags/schemas.py
index 5fc561a6..02b2fa18 100644
--- a/app/tags/schemas.py
+++ b/app/tags/schemas.py
@@ -4,8 +4,8 @@
 from pydantic import Field
 
 Tag = Annotated[
-    str, Field(max_length=30, pattern=re.compile(r"^[\w\.]+$", flags=re.UNICODE))
+    str, Field(max_length=30, pattern=re.compile(r"^[ㄱ-ㅎㅏ-ㅣ가-힣a-zA-Z0-9_.]+$"))
 ]
 """ 
-공백 없고, `_` 특수문자만 허용하는 문자열
+한글, 영어, 숫자, `_`, `.` 특수문자만 허용하는 문자열. 공백 없음.
 """