diff --git a/src/main/resources/db/migration/V1__create_tables.sql b/src/main/resources/db/migration/V1__create_tables.sql
index 1ba8fa2..5bccdd5 100644
--- a/src/main/resources/db/migration/V1__create_tables.sql
+++ b/src/main/resources/db/migration/V1__create_tables.sql
@@ -31,7 +31,7 @@ create table follows (
 
 create table tags (
   id varchar(255) primary key,
-  name varchar(255)
+  name varchar(255) not null
 );
 
 create table article_tags (
@@ -46,4 +46,4 @@ create table comments (
   user_id varchar(255),
   created_at TIMESTAMP NOT NULL,
   updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
-);
\ No newline at end of file
+);