diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 07799f2..c6569c7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,26 +8,13 @@ on:
 
 jobs:
 
-  analyze:
-    name: CodeQL
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2.3.4
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v1
-        with:
-          languages: python
-      - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v1
-
   msgcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-python@v2.2.2
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/setup-python@v3
+      - uses: actions/checkout@v3
       - run: sudo apt install -y gettext aspell libenchant-dev
-      - uses: actions/cache@v2.1.6
+      - uses: actions/cache@v3
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('lint-requirements.txt') }}
@@ -48,9 +35,9 @@ jobs:
           - "pydocstyle ."
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-python@v2.2.2
-      - uses: actions/checkout@v2.3.4
-      - uses: actions/cache@v2.1.6
+      - uses: actions/setup-python@v3
+      - uses: actions/checkout@v3
+      - uses: actions/cache@v3
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('lint-requirements.txt') }}
@@ -65,9 +52,9 @@ jobs:
     steps:
       - name: Install gettext
         run: sudo apt install gettext -y
-      - uses: actions/setup-python@v2.2.2
+      - uses: actions/setup-python@v3
       - run: python -m pip install --upgrade pip setuptools wheel twine readme-renderer
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v3
       - run: python setup.py sdist bdist_wheel
       - run: python -m twine check dist/*
       - uses: actions/upload-artifact@v2
@@ -82,23 +69,22 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
+          - "3.10"
         django-version:
-          - "2.2"
-          - "3.1"
-          - "3.2rc1"
+          - "3.2a"
+          - "4.0a"
         extra:
           - ""
           - "progressbar"
     steps:
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2.2.2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - run: sudo apt install gettext -y
-    - uses: actions/checkout@v2.3.4
+    - uses: actions/checkout@v3
     - run: python -m pip install --upgrade pip setuptools codecov wheel
     - run: python -m pip install .[${{ matrix.extra }}]
       if: ${{ matrix.extra }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 30eb296..bfa7850 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,9 +7,9 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2.3.4
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2.2.2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install gettext
diff --git a/lint-requirements.txt b/lint-requirements.txt
index a8978cc..7aae3f5 100644
--- a/lint-requirements.txt
+++ b/lint-requirements.txt
@@ -1,6 +1,6 @@
-bandit==1.7.0
-black==21.5b1
-flake8==3.9.2
-isort==5.8.0
-msgcheck==3.1
+bandit==1.7.4
+black==22.3.0
+flake8==4.0.1
+isort==5.10.1
+msgcheck==4.0.0
 pydocstyle==6.1.1
diff --git a/setup.cfg b/setup.cfg
index 696d7c0..10e8e2b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,15 +20,14 @@ classifier =
     Topic :: Software Development
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Framework :: Django
-    Framework :: Django :: 2.2
-    Framework :: Django :: 3.1
     Framework :: Django :: 3.2
+    Framework :: Django :: 4.0
 
-python_requires =  >=3.7
+python_requires =  >=3.8
 
 [options]
 include_package_data = True
diff --git a/stdimage/models.py b/stdimage/models.py
index 0eb6943..97ff514 100644
--- a/stdimage/models.py
+++ b/stdimage/models.py
@@ -144,6 +144,25 @@ def delete_variations(self):
             variation_name = self.get_variation_name(self.name, variation)
             self.storage.delete(variation_name)
 
+    def __getstate__(self):
+        state = super().__getstate__()
+        state["variations"] = {}
+        for variation_name in self.field.variations:
+            variation = getattr(self, variation_name)
+            variation_state = variation.__getstate__()
+            state["variations"][variation_name] = variation_state
+        return state
+
+    def __setstate__(self, state):
+        variations = state["variations"]
+        state.pop("variations")
+        super().__setstate__(state)
+        for key, value in variations.items():
+            cls = ImageFieldFile
+            field = cls.__new__(cls)
+            setattr(self, key, field)
+            getattr(self, key).__setstate__(value)
+
 
 class StdImageField(ImageField):
     """
diff --git a/tests/settings.py b/tests/settings.py
index 03ebbd9..480a744 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -45,4 +45,4 @@
 
 SECRET_KEY = "foobar"
 
-USE_L10N = True
+USE_TZ = True
diff --git a/tests/test_models.py b/tests/test_models.py
index 772737d..e8d47f2 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -1,13 +1,17 @@
 import io
 import os
 import time
+from copy import deepcopy
 
 import pytest
 from django.conf import settings
 from django.core.files.storage import default_storage
 from django.core.files.uploadedfile import SimpleUploadedFile
+from django.db.models.fields.files import ImageFieldFile
 from PIL import Image
 
+from stdimage.models import StdImageFieldFile
+
 from . import models
 from .models import (
     AdminDeleteModel,
@@ -170,6 +174,47 @@ def test_defer(self, db, django_assert_num_queries):
             deferred.image
         assert instance.image.thumbnail == deferred.image.thumbnail
 
+    @pytest.mark.django_db
+    def test_variations_deepcopy(self):
+        """Tests test_variations() with a deep copied object"""
+        instance_original = ResizeModel.objects.create(
+            image=self.fixtures["600x400.jpg"]
+        )
+        instance = deepcopy(instance_original)
+        assert isinstance(instance.image, StdImageFieldFile)
+
+        assert hasattr(instance.image, "thumbnail")
+        assert hasattr(instance.image, "medium")
+
+        assert isinstance(instance.image.thumbnail, ImageFieldFile)
+        assert isinstance(instance.image.medium, ImageFieldFile)
+
+        source_file = self.fixtures["600x400.jpg"]
+
+        assert os.path.exists(os.path.join(IMG_DIR, "600x400.jpg"))
+        assert instance.image.width == 600
+        assert instance.image.height == 400
+        path = os.path.join(IMG_DIR, "600x400.jpg")
+
+        with open(path, "rb") as f:
+            source_file.seek(0)
+            assert source_file.read() == f.read()
+
+        path = os.path.join(IMG_DIR, "600x400.medium.jpg")
+        assert os.path.exists(path)
+        assert instance.image.medium.width == 400
+        assert instance.image.medium.height <= 400
+        with open(os.path.join(IMG_DIR, "600x400.medium.jpg"), "rb") as f:
+            source_file.seek(0)
+            assert source_file.read() != f.read()
+
+        assert os.path.exists(os.path.join(IMG_DIR, "600x400.thumbnail.jpg"))
+        assert instance.image.thumbnail.width == 100
+        assert instance.image.thumbnail.height <= 75
+        with open(os.path.join(IMG_DIR, "600x400.thumbnail.jpg"), "rb") as f:
+            source_file.seek(0)
+            assert source_file.read() != f.read()
+
 
 class TestUtils(TestStdImage):
     """Tests Utils"""