diff --git a/django/contrib/auth/hashers.py b/django/contrib/auth/hashers.py
index 42159531dc..10c9079200 100644
--- a/django/contrib/auth/hashers.py
+++ b/django/contrib/auth/hashers.py
@@ -296,7 +296,7 @@ class PBKDF2PasswordHasher(BasePasswordHasher):
     """
 
     algorithm = "pbkdf2_sha256"
-    iterations = 390000
+    iterations = 480000
     digest = hashlib.sha256
 
     def encode(self, password, salt, iterations=None):
diff --git a/docs/releases/4.2.txt b/docs/releases/4.2.txt
index 5a23e285fa..0b698360fb 100644
--- a/docs/releases/4.2.txt
+++ b/docs/releases/4.2.txt
@@ -42,7 +42,8 @@ Minor features
 :mod:`django.contrib.auth`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-* ...
+* The default iteration count for the PBKDF2 password hasher is increased from
+  390,000 to 480,000.
 
 :mod:`django.contrib.contenttypes`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/tests/auth_tests/test_hashers.py b/tests/auth_tests/test_hashers.py
index 2faf2499b0..d0965fb6c1 100644
--- a/tests/auth_tests/test_hashers.py
+++ b/tests/auth_tests/test_hashers.py
@@ -77,7 +77,7 @@ class TestUtilsHashPass(SimpleTestCase):
         encoded = make_password("lètmein", "seasalt", "pbkdf2_sha256")
         self.assertEqual(
             encoded,
-            "pbkdf2_sha256$390000$seasalt$8xBlGd3jVgvJ+92hWPxi5ww0uuAuAnKgC45eudxro7c=",
+            "pbkdf2_sha256$480000$seasalt$G4ja8YRtfnNyEx4Ii2pbFMp/l8s4nnbMdJ+Fob/qNK8=",
         )
         self.assertTrue(is_password_usable(encoded))
         self.assertTrue(check_password("lètmein", encoded))
@@ -404,8 +404,8 @@ class TestUtilsHashPass(SimpleTestCase):
         encoded = hasher.encode("lètmein", "seasalt2")
         self.assertEqual(
             encoded,
-            "pbkdf2_sha256$390000$seasalt2$geC/uZ92nRXDSjSxeoiBqYyRcrLzMm8xK3r"
-            "o1QS1uo8=",
+            "pbkdf2_sha256$480000$seasalt2$WlORJKPl5w3Lubr7rYLOwSQCEOm4Or/NCA"
+            "aECnB1PE0=",
         )
         self.assertTrue(hasher.verify("lètmein", encoded))
 
@@ -413,7 +413,7 @@ class TestUtilsHashPass(SimpleTestCase):
         hasher = PBKDF2SHA1PasswordHasher()
         encoded = hasher.encode("lètmein", "seasalt2")
         self.assertEqual(
-            encoded, "pbkdf2_sha1$390000$seasalt2$aDapRanzW8aHTz97v2TcfHzWD+I="
+            encoded, "pbkdf2_sha1$480000$seasalt2$qyT+EkK5g82hk2r+fRecFeoe28E="
         )
         self.assertTrue(hasher.verify("lètmein", encoded))