diff --git a/plain-cache/plain/cache/migrations/0001_initial.py b/plain-cache/plain/cache/migrations/0001_initial.py
index 89c4542ff9..7cfde297af 100644
--- a/plain-cache/plain/cache/migrations/0001_initial.py
+++ b/plain-cache/plain/cache/migrations/0001_initial.py
@@ -18,7 +18,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 ("key", models.CharField(max_length=255, unique=True)),
diff --git a/plain-flags/plain/flags/migrations/0001_initial.py b/plain-flags/plain/flags/migrations/0001_initial.py
index 301bb15c4b..3813cbfd67 100644
--- a/plain-flags/plain/flags/migrations/0001_initial.py
+++ b/plain-flags/plain/flags/migrations/0001_initial.py
@@ -22,7 +22,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 (
@@ -52,7 +51,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 (
diff --git a/plain-models/plain/models/fields/__init__.py b/plain-models/plain/models/fields/__init__.py
index eba629615d..0e1b1aaf23 100644
--- a/plain-models/plain/models/fields/__init__.py
+++ b/plain-models/plain/models/fields/__init__.py
@@ -175,7 +175,6 @@ def __init__(
         rel=None,
         default=NOT_PROVIDED,
         editable=True,
-        serialize=True,
         choices=None,
         db_column=None,
         db_tablespace=None,
@@ -192,7 +191,6 @@ def __init__(
         self.is_relation = self.remote_field is not None
         self.default = default
         self.editable = editable
-        self.serialize = serialize
         if isinstance(choices, ChoicesMeta):
             choices = choices.choices
         if isinstance(choices, collections.abc.Iterator):
@@ -530,7 +528,6 @@ def deconstruct(self):
             "db_index": False,
             "default": NOT_PROVIDED,
             "editable": True,
-            "serialize": True,
             "choices": None,
             "db_column": None,
             "db_comment": None,
diff --git a/plain-models/plain/models/options.py b/plain-models/plain/models/options.py
index e5b2a260b0..30bf2fc602 100644
--- a/plain-models/plain/models/options.py
+++ b/plain-models/plain/models/options.py
@@ -305,7 +305,6 @@ def add_field(self, field, private=False):
     def setup_pk(self, field):
         if not self.pk and field.primary_key:
             self.pk = field
-            field.serialize = False
 
     def __repr__(self):
         return "<Options for %s>" % self.object_name
diff --git a/plain-oauth/plain/oauth/migrations/0001_initial.py b/plain-oauth/plain/oauth/migrations/0001_initial.py
index c8aeb25f97..0a28dcfa83 100644
--- a/plain-oauth/plain/oauth/migrations/0001_initial.py
+++ b/plain-oauth/plain/oauth/migrations/0001_initial.py
@@ -22,7 +22,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 ("created_at", models.DateTimeField(auto_now_add=True)),
diff --git a/plain-sessions/plain/sessions/migrations/0001_initial.py b/plain-sessions/plain/sessions/migrations/0001_initial.py
index 77b968c8f7..2e91d242d6 100644
--- a/plain-sessions/plain/sessions/migrations/0001_initial.py
+++ b/plain-sessions/plain/sessions/migrations/0001_initial.py
@@ -14,7 +14,6 @@ class Migration(migrations.Migration):
                     "session_key",
                     models.CharField(
                         max_length=40,
-                        serialize=False,
                         primary_key=True,
                     ),
                 ),
diff --git a/plain-sessions/plain/sessions/migrations/0002_alter_session_options_alter_session_expire_date_and_more.py b/plain-sessions/plain/sessions/migrations/0002_alter_session_options_alter_session_expire_date_and_more.py
index c88013f083..6b815072e5 100644
--- a/plain-sessions/plain/sessions/migrations/0002_alter_session_options_alter_session_expire_date_and_more.py
+++ b/plain-sessions/plain/sessions/migrations/0002_alter_session_options_alter_session_expire_date_and_more.py
@@ -27,6 +27,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name="session",
             name="session_key",
-            field=models.CharField(max_length=40, primary_key=True, serialize=False),
+            field=models.CharField(max_length=40, primary_key=True),
         ),
     ]
diff --git a/plain-worker/plain/worker/migrations/0001_initial.py b/plain-worker/plain/worker/migrations/0001_initial.py
index cb16b9f685..9d15459cf5 100644
--- a/plain-worker/plain/worker/migrations/0001_initial.py
+++ b/plain-worker/plain/worker/migrations/0001_initial.py
@@ -20,7 +20,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 (
diff --git a/plain-worker/plain/worker/migrations/0002_jobresult_remove_jobrequest_completed_at_and_more.py b/plain-worker/plain/worker/migrations/0002_jobresult_remove_jobrequest_completed_at_and_more.py
index 85defe5d1d..adf18c0aff 100644
--- a/plain-worker/plain/worker/migrations/0002_jobresult_remove_jobrequest_completed_at_and_more.py
+++ b/plain-worker/plain/worker/migrations/0002_jobresult_remove_jobrequest_completed_at_and_more.py
@@ -20,7 +20,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 (
diff --git a/plain-worker/plain/worker/migrations/0012_job_jobresult_job_uuid_alter_jobresult_status.py b/plain-worker/plain/worker/migrations/0012_job_jobresult_job_uuid_alter_jobresult_status.py
index 1d570d6ab3..17b123806a 100644
--- a/plain-worker/plain/worker/migrations/0012_job_jobresult_job_uuid_alter_jobresult_status.py
+++ b/plain-worker/plain/worker/migrations/0012_job_jobresult_job_uuid_alter_jobresult_status.py
@@ -20,7 +20,6 @@ class Migration(migrations.Migration):
                     models.BigAutoField(
                         auto_created=True,
                         primary_key=True,
-                        serialize=False,
                     ),
                 ),
                 (