diff --git a/alembic/versions/496f7a700f2e_add_priorities.py b/alembic/versions/496f7a700f2e_add_priorities.py
new file mode 100644
index 0000000..21c7ca7
--- /dev/null
+++ b/alembic/versions/496f7a700f2e_add_priorities.py
@@ -0,0 +1,37 @@
+"""Add priorities
+
+Revision ID: 496f7a700f2e
+Revises: 4cae55a80a42
+Create Date: 2016-03-24 12:19:34.298752
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '496f7a700f2e'
+down_revision = '4cae55a80a42'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    ''' Add the column _priorities to the table projects
+    and the column priority to the table issues.
+    '''
+    op.add_column(
+        'projects',
+        sa.Column('_priorities', sa.Text, nullable=True)
+    )
+
+    op.add_column(
+        'issues',
+        sa.Column('priority', sa.Integer, nullable=True, default=None)
+    )
+
+
+def downgrade():
+    ''' Drop the column _priorities from the table projects
+    and the column priority from the table issues.
+    '''
+    op.drop_column('projects', '_priorities')
+    op.drop_column('issues', 'priority')