diff --git a/migrations/env.py b/migrations/env.py
index 630e381a..68feded2 100644
--- a/migrations/env.py
+++ b/migrations/env.py
@@ -1,3 +1,5 @@
+from __future__ import with_statement
+
 import logging
 from logging.config import fileConfig
 
diff --git a/migrations/versions/7c12964efde1_.py b/migrations/versions/50dd2e016d94_.py
similarity index 99%
rename from migrations/versions/7c12964efde1_.py
rename to migrations/versions/50dd2e016d94_.py
index 9a285b72..a702c5a4 100644
--- a/migrations/versions/7c12964efde1_.py
+++ b/migrations/versions/50dd2e016d94_.py
@@ -1,8 +1,8 @@
 """empty message
 
-Revision ID: 7c12964efde1
+Revision ID: 50dd2e016d94
 Revises: 
-Create Date: 2022-11-08 07:48:44.265652
+Create Date: 2022-11-08 16:28:18.991635
 
 """
 from alembic import op
@@ -10,7 +10,7 @@ import sqlalchemy as sa
 
 
 # revision identifiers, used by Alembic.
-revision = '7c12964efde1'
+revision = '50dd2e016d94'
 down_revision = None
 branch_labels = None
 depends_on = None
@@ -95,7 +95,7 @@ def upgrade():
     )
     op.create_table('process_instance',
     sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('process_model_identifier', sa.String(length=50), nullable=False),
+    sa.Column('process_model_identifier', sa.String(length=255), nullable=False),
     sa.Column('process_group_identifier', sa.String(length=50), nullable=False),
     sa.Column('process_initiator_id', sa.Integer(), nullable=False),
     sa.Column('bpmn_json', sa.JSON(), nullable=True),
diff --git a/src/spiffworkflow_backend/models/process_instance.py b/src/spiffworkflow_backend/models/process_instance.py
index 50c3c9f7..c06126f2 100644
--- a/src/spiffworkflow_backend/models/process_instance.py
+++ b/src/spiffworkflow_backend/models/process_instance.py
@@ -72,7 +72,7 @@ class ProcessInstanceModel(SpiffworkflowBaseDBModel):
 
     __tablename__ = "process_instance"
     id: int = db.Column(db.Integer, primary_key=True)
-    process_model_identifier: str = db.Column(db.String(50), nullable=False, index=True)
+    process_model_identifier: str = db.Column(db.String(255), nullable=False, index=True)
     process_group_identifier: str = db.Column(db.String(50), nullable=False, index=True)
     process_initiator_id: int = db.Column(ForeignKey(UserModel.id), nullable=False)
     process_initiator = relationship("UserModel")