diff --git a/analytics/migrations/0001_initial.py b/analytics/migrations/0001_initial.py
index e349888bb9..33bfaf00c2 100644
--- a/analytics/migrations/0001_initial.py
+++ b/analytics/migrations/0001_initial.py
@@ -19,7 +19,7 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('info', models.CharField(max_length=1000)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='HuddleCount',
@@ -33,7 +33,7 @@ class Migration(migrations.Migration):
                 ('value', models.BigIntegerField()),
                 ('anomaly', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='analytics.Anomaly', null=True)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='InstallationCount',
@@ -45,7 +45,7 @@ class Migration(migrations.Migration):
                 ('value', models.BigIntegerField()),
                 ('anomaly', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='analytics.Anomaly', null=True)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='RealmCount',
@@ -59,7 +59,7 @@ class Migration(migrations.Migration):
                 ('anomaly', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='analytics.Anomaly', null=True)),
 
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='StreamCount',
@@ -73,7 +73,7 @@ class Migration(migrations.Migration):
                 ('value', models.BigIntegerField()),
                 ('anomaly', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='analytics.Anomaly', null=True)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='UserCount',
@@ -87,7 +87,7 @@ class Migration(migrations.Migration):
                 ('value', models.BigIntegerField()),
                 ('anomaly', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='analytics.Anomaly', null=True)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.AlterUniqueTogether(
             name='usercount',
diff --git a/analytics/migrations/0003_fillstate.py b/analytics/migrations/0003_fillstate.py
index 618b7ed177..64d3d33428 100644
--- a/analytics/migrations/0003_fillstate.py
+++ b/analytics/migrations/0003_fillstate.py
@@ -19,6 +19,6 @@ class Migration(migrations.Migration):
                 ('state', models.PositiveSmallIntegerField()),
                 ('last_modified', models.DateTimeField(auto_now=True)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
     ]
diff --git a/zerver/lib/str_utils.py b/zerver/lib/str_utils.py
index daefb74ada..1cc13bf1b1 100644
--- a/zerver/lib/str_utils.py
+++ b/zerver/lib/str_utils.py
@@ -53,22 +53,3 @@ def force_str(s: Union[str, bytes], encoding: str='utf-8') -> str:
         return s.decode(encoding)
     else:
         raise TypeError("force_str expects a string type")
-
-class ModelReprMixin:
-    """
-    This mixin provides a python 2 and 3 compatible way of handling string representation of a model.
-    When declaring a model, inherit this mixin before django.db.models.Model.
-    Define __unicode__ on your model which returns a str object.
-    This mixin will automatically define __str__ and __repr__.
-    """
-
-    def __unicode__(self) -> str:
-        # Originally raised an exception, but Django (e.g. the ./manage.py shell)
-        # was catching the exception and not displaying any sort of error
-        return "Implement __unicode__ in your subclass of ModelReprMixin!"
-
-    def __str__(self) -> str:
-        return force_str(self.__unicode__())
-
-    def __repr__(self) -> str:
-        return force_str(self.__unicode__())
diff --git a/zerver/migrations/0044_reaction.py b/zerver/migrations/0044_reaction.py
index 52a8910ca8..cf97197542 100644
--- a/zerver/migrations/0044_reaction.py
+++ b/zerver/migrations/0044_reaction.py
@@ -21,7 +21,7 @@ class Migration(migrations.Migration):
                 ('message', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='zerver.Message')),
                 ('emoji_name', models.TextField()),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.AlterUniqueTogether(
             name='reaction',
diff --git a/zerver/migrations/0067_archived_models.py b/zerver/migrations/0067_archived_models.py
index c140d1aa2a..317f1c1cae 100644
--- a/zerver/migrations/0067_archived_models.py
+++ b/zerver/migrations/0067_archived_models.py
@@ -30,7 +30,7 @@ class Migration(migrations.Migration):
             options={
                 'abstract': False,
             },
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='ArchivedMessage',
@@ -54,7 +54,7 @@ class Migration(migrations.Migration):
             options={
                 'abstract': False,
             },
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.CreateModel(
             name='ArchivedUserMessage',
@@ -68,7 +68,7 @@ class Migration(migrations.Migration):
             options={
                 'abstract': False,
             },
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.AddField(
             model_name='archivedattachment',
diff --git a/zerver/migrations/0101_muted_topic.py b/zerver/migrations/0101_muted_topic.py
index 34dcbb89c3..3ff8ac2389 100644
--- a/zerver/migrations/0101_muted_topic.py
+++ b/zerver/migrations/0101_muted_topic.py
@@ -23,7 +23,7 @@ class Migration(migrations.Migration):
                 ('stream', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='zerver.Stream')),
                 ('user_profile', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
             ],
-            bases=(zerver.lib.str_utils.ModelReprMixin, models.Model),
+            bases=(models.Model,),
         ),
         migrations.AlterUniqueTogether(
             name='mutedtopic',