diff --git a/migrations/20230324221303_create_league_names.up.sql b/migrations/20230324221303_create_league_names.up.sql
index b038373..9be0b34 100644
--- a/migrations/20230324221303_create_league_names.up.sql
+++ b/migrations/20230324221303_create_league_names.up.sql
@@ -10,5 +10,7 @@ CREATE TABLE IF NOT EXISTS league_names (
   CONSTRAINT league_fk
     FOREIGN KEY(league)
       REFERENCES leagues(id)
-      ON DELETE RESTRICT
+      ON DELETE RESTRICT,
+  CONSTRAINT no_duplicated_league_names
+    UNIQUE (league, language)
 );
diff --git a/migrations/20230324221315_create_division_names.up.sql b/migrations/20230324221315_create_division_names.up.sql
index ba12b4b..c753e5b 100644
--- a/migrations/20230324221315_create_division_names.up.sql
+++ b/migrations/20230324221315_create_division_names.up.sql
@@ -10,5 +10,7 @@ CREATE TABLE IF NOT EXISTS division_names (
   CONSTRAINT division_fk
     FOREIGN KEY(division)
       REFERENCES divisions(id)
-      ON DELETE RESTRICT
+      ON DELETE RESTRICT,
+  CONSTRAINT no_duplicated_division_names
+    UNIQUE (division, language)
 );
diff --git a/migrations/20230324224960_create_team_names.up.sql b/migrations/20230324224960_create_team_names.up.sql
index 8a12e41..dc8e5eb 100644
--- a/migrations/20230324224960_create_team_names.up.sql
+++ b/migrations/20230324224960_create_team_names.up.sql
@@ -10,6 +10,8 @@ CREATE TABLE IF NOT EXISTS team_names (
   CONSTRAINT team_fk
     FOREIGN KEY(team)
       REFERENCES teams(id)
-      ON DELETE RESTRICT
+      ON DELETE RESTRICT,
+  CONSTRAINT no_duplicated_team_names
+    UNIQUE (team, language)
 );
 
diff --git a/migrations/20230327025705_create_game_names.up.sql b/migrations/20230327025705_create_game_names.up.sql
index 2117f78..59f6647 100644
--- a/migrations/20230327025705_create_game_names.up.sql
+++ b/migrations/20230327025705_create_game_names.up.sql
@@ -10,5 +10,7 @@ CREATE TABLE IF NOT EXISTS game_names (
   CONSTRAINT game_fk
     FOREIGN KEY(game)
       REFERENCES games(id)
-      ON DELETE RESTRICT
+      ON DELETE RESTRICT,
+  CONSTRAINT no_duplicated_game_names
+    UNIQUE (game, language)
 );