diff --git a/tests/file_storage/tests.py b/tests/file_storage/tests.py
index 2a6f602e3e..c09d0ef239 100644
--- a/tests/file_storage/tests.py
+++ b/tests/file_storage/tests.py
@@ -567,9 +567,10 @@ class InconsistentGetImageDimensionsBug(unittest.TestCase):
         from django.core.files.images import ImageFile
 
         img_path = os.path.join(os.path.dirname(upath(__file__)), "test.png")
-        image = ImageFile(open(img_path, 'rb'))
-        image_pil = Image.open(img_path)
-        size_1, size_2 = get_image_dimensions(image), get_image_dimensions(image)
+        with open(img_path, 'rb') as file:
+            image = ImageFile(file)
+            image_pil = Image.open(img_path)
+            size_1, size_2 = get_image_dimensions(image), get_image_dimensions(image)
         self.assertEqual(image_pil.size, size_1)
         self.assertEqual(size_1, size_2)
 
diff --git a/tests/staticfiles_tests/tests.py b/tests/staticfiles_tests/tests.py
index 7200037050..b73eea319a 100644
--- a/tests/staticfiles_tests/tests.py
+++ b/tests/staticfiles_tests/tests.py
@@ -783,10 +783,11 @@ class TestAppStaticStorage(TestCase):
         os.mkdir(self.search_path)
         module_path = os.path.join(self.search_path, 'foo_module')
         os.mkdir(module_path)
-        open(os.path.join(module_path, '__init__.py'), 'w')
+        self.init_file = open(os.path.join(module_path, '__init__.py'), 'w')
         sys.path.append(os.path.abspath(self.search_path))
 
     def tearDown(self):
+        self.init_file.close()
         sys.path.remove(os.path.abspath(self.search_path))
         shutil.rmtree(self.search_path)