diff --git a/invenio_access/alembic/842a62b56e60_change_fk_accountsrole_to_string.py b/invenio_access/alembic/842a62b56e60_change_fk_accountsrole_to_string.py
new file mode 100644
index 0000000..7e1e216
--- /dev/null
+++ b/invenio_access/alembic/842a62b56e60_change_fk_accountsrole_to_string.py
@@ -0,0 +1,71 @@
+#
+# This file is part of Invenio.
+# Copyright (C) 2016-2018 CERN.
+#
+# Invenio is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
+"""Change FK AccountsRole to string."""
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "842a62b56e60"
+down_revision = "04480be1593e"
+branch_labels = ()
+depends_on = "8f11b75e0995"
+
+
+def upgrade():
+    """Upgrade database."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    # op.drop_index("ix_uq_partial_files_object_is_head", table_name="files_object")
+    # ### end Alembic commands ###
+
+    #op.drop_constraint(
+    #    "fk_access_actionsroles_role_id_accounts_role",
+    #    "access_actionsroles",
+    #    type_="foreignkey",
+    #)
+
+    op.alter_column(
+        "access_actionsroles",
+        "role_id",
+        existing_type=sa.Integer,
+        type_=sa.String(80),
+        postgresql_using="role_id::integer",
+    )
+    #op.create_foreign_key(
+    #    op.f("fk_access_actionsroles_role_id_accounts_role"),
+    #    "access_actionsroles",
+    #    "accounts_role",
+    #    ["role_id"],
+    #    ["id"],
+    #    ondelete="CASCADE",
+    #)
+
+
+def downgrade():
+    """Downgrade database."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(
+        "fk_access_actionsroles_role_id_accounts_role",
+        "access_actionsroles",
+        type_="foreignkey",
+    )
+    op.alter_column(
+        "access_actionsroles",
+        "role_id",
+        existing_type=sa.String(80),
+        type_=sa.Integer,
+        postgresql_using="role_id::integer",
+    )
+    op.create_foreign_key(
+        op.f("fk_access_actionsroles_role_id_accounts_role"),
+        "access_actionsroles",
+        "accounts_role",
+        ["role_id"],
+        ["id"],
+        ondelete="CASCADE",
+    )
diff --git a/invenio_access/models.py b/invenio_access/models.py
index e83af76..b915712 100644
--- a/invenio_access/models.py
+++ b/invenio_access/models.py
@@ -156,7 +156,7 @@ class ActionRoles(ActionNeedMixin, db.Model):
     )
 
     role_id = db.Column(
-        db.Integer(),
+        db.String(80),
         db.ForeignKey(Role.id, ondelete="CASCADE"),
         nullable=False,
         index=True,