diff --git a/.travis.yml b/.travis.yml
index b6a4d54..6e4a6a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,6 +29,7 @@ addons:
 before_install:
   - ./pypi_packager.sh
 install:
+  - if [[ $TRAVIS_PYTHON_VERSION == 3.7 ]]; then pip install -U importlib_metadata; fi
   - pip install -q django==$DJANGO_VERSION
   - pip install -e .[coverage]
   - pip install -q coveralls
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b8d0e5..2dfde09 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 4.0.1 (31.08.2022)
+- make lazy text Django 4.0 compatible
+
 ## 4.0.0 (23.05.2020)
 ### Added
 - Support of Django 2.1
diff --git a/constrainedfilefield/__init__.py b/constrainedfilefield/__init__.py
index ec5434c..88b6012 100644
--- a/constrainedfilefield/__init__.py
+++ b/constrainedfilefield/__init__.py
@@ -3,7 +3,7 @@
 
 __license__ = "BSD-3-Clause"
 __author__ = "Marc Bourqui"
-__version__ = "4.0.0"
+__version__ = "4.0.1"
 __version_info__ = tuple(
     [
         int(num) if num.isdigit() else num
diff --git a/constrainedfilefield/fields/file.py b/constrainedfilefield/fields/file.py
index 1e50480..7efed81 100644
--- a/constrainedfilefield/fields/file.py
+++ b/constrainedfilefield/fields/file.py
@@ -7,12 +7,12 @@
 from django.conf import settings
 from django.db import models
 from django.template.defaultfilters import filesizeformat
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
 class ConstrainedFileField(models.FileField):
     """
-    A FielField with additional constraints. Namely, the file size and type can be restricted. If
+    A FileField with additional constraints. Namely, the file size and type can be restricted. If
     using the types, the magic library is required. Setting neither a file size nor type behaves
     like a regular FileField.
 
diff --git a/constrainedfilefield/fields/image.py b/constrainedfilefield/fields/image.py
index cc381f1..f62f0c7 100644
--- a/constrainedfilefield/fields/image.py
+++ b/constrainedfilefield/fields/image.py
@@ -7,7 +7,7 @@
 from django.conf import settings
 from django.db import models
 from django.template.defaultfilters import filesizeformat
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 
 class ConstrainedImageField(models.ImageField):
diff --git a/constrainedfilefield/tests/models.py b/constrainedfilefield/tests/models.py
index 264f06b..1d8967e 100644
--- a/constrainedfilefield/tests/models.py
+++ b/constrainedfilefield/tests/models.py
@@ -28,7 +28,11 @@ class TestDocModel(models.Model):
 
 
 class TestImageModel(models.Model):
-    the_image = ConstrainedImageField(null=True, blank=True, upload_to="testfile",)
+    the_image = ConstrainedImageField(
+        null=True,
+        blank=True,
+        upload_to="testfile",
+        content_types=['image/png'],)
     the_image_small = ConstrainedImageField(
         null=True,
         blank=True,
diff --git a/constrainedfilefield/tests/sample_files/unsupported_image.jpg b/constrainedfilefield/tests/sample_files/unsupported_image.jpg
new file mode 100644
index 0000000..1aafc9f
Binary files /dev/null and b/constrainedfilefield/tests/sample_files/unsupported_image.jpg differ
diff --git a/constrainedfilefield/tests/tests/backend.py b/constrainedfilefield/tests/tests/backend.py
index 9408c72..7b6defd 100644
--- a/constrainedfilefield/tests/tests/backend.py
+++ b/constrainedfilefield/tests/tests/backend.py
@@ -224,6 +224,24 @@ def test_form_invalid_filetype(self):
             u"Allowed types are ['image/png'].",
         )
 
+    def test_form_invalid_image_filetype(self):
+        files = {
+            "the_image": self._create_simple_uploaded_file(
+                orig_filename="unsupported_image.jpg",
+                dest_filename="the_file.jpg",
+                content_type="image/jpeg",
+            ),
+        }
+        form = TestImageModelForm(data={}, files=files)
+        self.assertFalse(form.is_valid())
+        self.assertEqual(len(form.errors), 1)
+        self.assertEqual(len(form.errors["the_image"]), 1)
+        self.assertEqual(
+            form.errors["the_image"][0],
+            u"Unsupported file type: image/jpeg. "
+            u"Allowed types are ['image/png']."
+        )
+
     def test_form_invalid_filetype_and_size(self):
         form = self._create_bound_test_model_form(
             form_class=TestModelForm,