diff --git a/funnel/models/comment.py b/funnel/models/comment.py
index fff72671b..25ec784d3 100644
--- a/funnel/models/comment.py
+++ b/funnel/models/comment.py
@@ -87,7 +87,7 @@ class Commentset(UuidMixin, BaseMixin[int, Account], Model):
     _state: Mapped[int] = sa_orm.mapped_column(
         'state',
         sa.SmallInteger,
-        StateManager.check_constraint('state', COMMENTSET_STATE),
+        StateManager.check_constraint('state', COMMENTSET_STATE, sa.SmallInteger),
         nullable=False,
         default=COMMENTSET_STATE.OPEN,
     )
@@ -328,7 +328,7 @@ class Comment(UuidMixin, BaseMixin[int, Account], Model):
 
     _state: Mapped[int] = sa_orm.mapped_column(
         'state',
-        StateManager.check_constraint('state', COMMENT_STATE),
+        StateManager.check_constraint('state', COMMENT_STATE, sa.Integer),
         default=COMMENT_STATE.SUBMITTED,
         nullable=False,
     )
diff --git a/funnel/models/email_address.py b/funnel/models/email_address.py
index 14e88a3c6..2a14e0d2e 100644
--- a/funnel/models/email_address.py
+++ b/funnel/models/email_address.py
@@ -234,6 +234,7 @@ class methods, depending on whether the email address is linked to an owner or n
         StateManager.check_constraint(
             'delivery_state',
             EMAIL_DELIVERY_STATE,
+            sa.Integer,
             name='email_address_delivery_state_check',
         ),
         nullable=False,
diff --git a/funnel/models/moderation.py b/funnel/models/moderation.py
index e0ea6132e..08cd28e53 100644
--- a/funnel/models/moderation.py
+++ b/funnel/models/moderation.py
@@ -35,7 +35,9 @@ class CommentModeratorReport(UuidMixin, BaseMixin[UUID, Account], Model):
     reported_by: Mapped[Account] = relationship(back_populates='moderator_reports')
     report_type: Mapped[int] = sa_orm.mapped_column(
         sa.SmallInteger,
-        StateManager.check_constraint('report_type', MODERATOR_REPORT_TYPE),
+        StateManager.check_constraint(
+            'report_type', MODERATOR_REPORT_TYPE, sa.SmallInteger
+        ),
         nullable=False,
         default=MODERATOR_REPORT_TYPE.SPAM,
     )
diff --git a/funnel/models/project.py b/funnel/models/project.py
index 6889dbf98..a5008db7e 100644
--- a/funnel/models/project.py
+++ b/funnel/models/project.py
@@ -154,7 +154,7 @@ class Project(UuidMixin, BaseScopedNameMixin[int, Account], Model):
 
     _state: Mapped[int] = sa_orm.mapped_column(
         'state',
-        StateManager.check_constraint('state', PROJECT_STATE),
+        StateManager.check_constraint('state', PROJECT_STATE, sa.Integer),
         default=PROJECT_STATE.DRAFT,
         nullable=False,
         index=True,
@@ -165,7 +165,7 @@ class Project(UuidMixin, BaseScopedNameMixin[int, Account], Model):
     )
     _cfp_state: Mapped[int] = sa_orm.mapped_column(
         'cfp_state',
-        StateManager.check_constraint('cfp_state', CFP_STATE),
+        StateManager.check_constraint('cfp_state', CFP_STATE, sa.Integer),
         default=CFP_STATE.NONE,
         nullable=False,
         index=True,
diff --git a/funnel/models/proposal.py b/funnel/models/proposal.py
index eaa0fe07d..ba1f8374c 100644
--- a/funnel/models/proposal.py
+++ b/funnel/models/proposal.py
@@ -162,7 +162,7 @@ class Proposal(UuidMixin, BaseScopedIdNameMixin, VideoMixin, ReorderMixin, Model
 
     _state: Mapped[int] = sa_orm.mapped_column(
         'state',
-        StateManager.check_constraint('state', PROPOSAL_STATE),
+        StateManager.check_constraint('state', PROPOSAL_STATE, sa.Integer),
         default=PROPOSAL_STATE.SUBMITTED,
         nullable=False,
     )
diff --git a/funnel/models/rsvp.py b/funnel/models/rsvp.py
index 9480391b2..00bbc11f7 100644
--- a/funnel/models/rsvp.py
+++ b/funnel/models/rsvp.py
@@ -68,7 +68,7 @@ class Rsvp(UuidMixin, NoIdMixin, Model):
     _state: Mapped[str] = sa_orm.mapped_column(
         'state',
         sa.CHAR(1),
-        StateManager.check_constraint('state', RSVP_STATUS),
+        StateManager.check_constraint('state', RSVP_STATUS, sa.CHAR(1)),
         default=RSVP_STATUS.AWAITING,
         nullable=False,
     )
diff --git a/funnel/models/update.py b/funnel/models/update.py
index 3f471c396..7aca005c5 100644
--- a/funnel/models/update.py
+++ b/funnel/models/update.py
@@ -51,7 +51,9 @@ class Update(UuidMixin, BaseScopedIdNameMixin[int, Account], Model):
     _visibility_state: Mapped[int] = sa_orm.mapped_column(
         'visibility_state',
         sa.SmallInteger,
-        StateManager.check_constraint('visibility_state', VISIBILITY_STATE),
+        StateManager.check_constraint(
+            'visibility_state', VISIBILITY_STATE, sa.SmallInteger
+        ),
         default=VISIBILITY_STATE.PUBLIC,
         nullable=False,
         index=True,
@@ -63,7 +65,7 @@ class Update(UuidMixin, BaseScopedIdNameMixin[int, Account], Model):
     _state: Mapped[int] = sa_orm.mapped_column(
         'state',
         sa.SmallInteger,
-        StateManager.check_constraint('state', UPDATE_STATE),
+        StateManager.check_constraint('state', UPDATE_STATE, sa.SmallInteger),
         default=UPDATE_STATE.DRAFT,
         nullable=False,
         index=True,