diff --git a/src/db/models.py b/src/db/models.py
index c00f13b..6b25e95 100644
--- a/src/db/models.py
+++ b/src/db/models.py
@@ -11,10 +11,14 @@ class MasterPass(sqlmodel.SQLModel, table=True):
         )
     )
     salt: bytes = sqlmodel.Field(
-        sa_column=sqlmodel.Column(sqlmodel.BINARY(64), nullable=False)
+        sa_column=sqlmodel.Column(sqlmodel.BINARY(64), nullable=False),
+        max_length=64,
+        min_length=64,
     )
     password_hash: bytes = sqlmodel.Field(
-        sa_column=sqlmodel.Column(sqlmodel.BINARY(128), nullable=False)
+        sa_column=sqlmodel.Column(sqlmodel.BINARY(128), nullable=False),
+        max_length=128,
+        min_length=128,
     )
 
 
@@ -22,13 +26,17 @@ class Account(sqlmodel.SQLModel, table=True):
     __tablename__ = "accounts"
     __table_args__ = (sqlmodel.PrimaryKeyConstraint("user_id", "name"),)
     user_id: int = sqlmodel.Field()
-    name: str = sqlmodel.Field(max_length=255)
+    name: str = sqlmodel.Field(max_length=256)
     salt: bytes = sqlmodel.Field(
-        sa_column=sqlmodel.Column(sqlmodel.BINARY(64), nullable=False)
+        sa_column=sqlmodel.Column(sqlmodel.BINARY(64), nullable=False),
+        max_length=64,
+        min_length=64,
     )
     enc_login: bytes = sqlmodel.Field(
-        sa_column=sqlmodel.Column(sqlmodel.VARBINARY(256), nullable=False)
+        sa_column=sqlmodel.Column(sqlmodel.VARBINARY(256), nullable=False),
+        max_length=256,
     )
     enc_password: bytes = sqlmodel.Field(
-        sa_column=sqlmodel.Column(sqlmodel.VARBINARY(256), nullable=False)
+        sa_column=sqlmodel.Column(sqlmodel.VARBINARY(256), nullable=False),
+        max_length=256,
     )