diff --git a/member_database/authentication/models.py b/member_database/authentication/models.py
index 4351fbb..c235ceb 100644
--- a/member_database/authentication/models.py
+++ b/member_database/authentication/models.py
@@ -55,7 +55,7 @@ class User(UserMixin, db.Model):
     id = db.Column(db.Integer, primary_key=True)
 
     username = db.Column(db.String(64), index=True, unique=True)
-    password_hash = db.Column(db.String(128))
+    password_hash = db.Column(db.String(256))
 
     person_id = db.Column(db.Integer, db.ForeignKey("person.id"), nullable=False)
 
diff --git a/migrations/versions/742e6adb504c_increase_length_of_password_hash_field.py b/migrations/versions/742e6adb504c_increase_length_of_password_hash_field.py
new file mode 100644
index 0000000..6370d48
--- /dev/null
+++ b/migrations/versions/742e6adb504c_increase_length_of_password_hash_field.py
@@ -0,0 +1,42 @@
+"""Increase length of password_hash field
+
+Revision ID: 742e6adb504c
+Revises: 0151da823114
+Create Date: 2024-01-19 12:51:21.629225
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "742e6adb504c"
+down_revision = "0151da823114"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("user", schema=None) as batch_op:
+        batch_op.alter_column(
+            "password_hash",
+            existing_type=sa.VARCHAR(length=128),
+            type_=sa.String(length=256),
+            existing_nullable=True,
+        )
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("user", schema=None) as batch_op:
+        batch_op.alter_column(
+            "password_hash",
+            existing_type=sa.String(length=256),
+            type_=sa.VARCHAR(length=128),
+            existing_nullable=True,
+        )
+
+    # ### end Alembic commands ###