diff --git a/django/contrib/auth/hashers.py b/django/contrib/auth/hashers.py
index 8673b95cef..cadbb809be 100644
--- a/django/contrib/auth/hashers.py
+++ b/django/contrib/auth/hashers.py
@@ -247,7 +247,7 @@ class PBKDF2PasswordHasher(BasePasswordHasher):
     safely but you must rename the algorithm if you change SHA256.
     """
     algorithm = "pbkdf2_sha256"
-    iterations = 30000
+    iterations = 36000
     digest = hashlib.sha256
 
     def encode(self, password, salt, iterations=None):
diff --git a/docs/releases/1.11.txt b/docs/releases/1.11.txt
index 1bc98dacd8..e2583a4dc4 100644
--- a/docs/releases/1.11.txt
+++ b/docs/releases/1.11.txt
@@ -46,7 +46,8 @@ Minor features
 :mod:`django.contrib.auth`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-* ...
+* The default iteration count for the PBKDF2 password hasher is increased by
+  20%.
 
 :mod:`django.contrib.contenttypes`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/tests/auth_tests/test_hashers.py b/tests/auth_tests/test_hashers.py
index 5b4ef7b378..69d6f555a8 100644
--- a/tests/auth_tests/test_hashers.py
+++ b/tests/auth_tests/test_hashers.py
@@ -57,7 +57,7 @@ class TestUtilsHashPass(SimpleTestCase):
 
     def test_pbkdf2(self):
         encoded = make_password('lètmein', 'seasalt', 'pbkdf2_sha256')
-        self.assertEqual(encoded, 'pbkdf2_sha256$30000$seasalt$VrX+V8drCGo68wlvy6rfu8i1d1pfkdeXA4LJkRGJodY=')
+        self.assertEqual(encoded, 'pbkdf2_sha256$36000$seasalt$mEUPPFJkT/xtwDU8rB7Q+puHRZnR07WRjerTkt/3HI0=')
         self.assertTrue(is_password_usable(encoded))
         self.assertTrue(check_password('lètmein', encoded))
         self.assertFalse(check_password('lètmeinz', encoded))
@@ -281,13 +281,13 @@ class TestUtilsHashPass(SimpleTestCase):
     def test_low_level_pbkdf2(self):
         hasher = PBKDF2PasswordHasher()
         encoded = hasher.encode('lètmein', 'seasalt2')
-        self.assertEqual(encoded, 'pbkdf2_sha256$30000$seasalt2$a75qzbogeVhNFeMqhdgyyoqGKpIzYUo651sq57RERew=')
+        self.assertEqual(encoded, 'pbkdf2_sha256$36000$seasalt2$QkIBVCvGmTmyjPJ5yox2y/jQB8isvgUNK98FxOU1UYo=')
         self.assertTrue(hasher.verify('lètmein', encoded))
 
     def test_low_level_pbkdf2_sha1(self):
         hasher = PBKDF2SHA1PasswordHasher()
         encoded = hasher.encode('lètmein', 'seasalt2')
-        self.assertEqual(encoded, 'pbkdf2_sha1$30000$seasalt2$pMzU1zNPcydf6wjnJFbiVKwgULc=')
+        self.assertEqual(encoded, 'pbkdf2_sha1$36000$seasalt2$GoU+9AubJ/xRkO0WD1Xf3WPxWfE=')
         self.assertTrue(hasher.verify('lètmein', encoded))
 
     @override_settings(