diff --git a/server/szurubooru/migrations/versions/3c1f0316fa7f_resize_post_columns.py b/server/szurubooru/migrations/versions/3c1f0316fa7f_resize_post_columns.py
new file mode 100644
index 0000000..417803e
--- /dev/null
+++ b/server/szurubooru/migrations/versions/3c1f0316fa7f_resize_post_columns.py
@@ -0,0 +1,38 @@
+'''
+resize post columns
+
+Revision ID: 3c1f0316fa7f
+Created at: 2019-07-27 22:29:33.874837
+'''
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = '3c1f0316fa7f'
+down_revision = '1cd4c7b22846'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.alter_column(
+        'post', 'flags',
+        type_=sa.Unicode(32),
+        existing_type=sa.Unicode(200))
+
+    op.alter_column(
+        'post', 'source',
+        type_=sa.Unicode(2048),
+        existing_type=sa.Unicode(200))
+
+
+def downgrade():
+    op.alter_column(
+        'post', 'flags',
+        type_=sa.Unicode(200),
+        existing_type=sa.Unicode(32))
+
+    op.alter_column(
+        'post', 'source',
+        type_=sa.Unicode(200),
+        existing_type=sa.Unicode(2048))
diff --git a/server/szurubooru/model/post.py b/server/szurubooru/model/post.py
index bba4c54..30e2900 100644
--- a/server/szurubooru/model/post.py
+++ b/server/szurubooru/model/post.py
@@ -170,8 +170,8 @@ class Post(Base):
     creation_time = sa.Column('creation_time', sa.DateTime, nullable=False)
     last_edit_time = sa.Column('last_edit_time', sa.DateTime)
     safety = sa.Column('safety', sa.Unicode(32), nullable=False)
-    source = sa.Column('source', sa.Unicode(200))
-    flags_string = sa.Column('flags', sa.Unicode(200), default='')
+    source = sa.Column('source', sa.Unicode(2048))
+    flags_string = sa.Column('flags', sa.Unicode(32), default='')
 
     # content description
     type = sa.Column('type', sa.Unicode(32), nullable=False)