diff --git a/pkgs/openslide/python.nix b/pkgs/openslide/python.nix
index 12fea5c..770fb02 100644
--- a/pkgs/openslide/python.nix
+++ b/pkgs/openslide/python.nix
@@ -3,18 +3,16 @@
 , pillow }:
 
 buildPythonPackage rec {
-  version = "1.1.1";
+  version = "1.1.2";
   name = "openslide-python-${version}";
 
   src = fetchFromGitHub {
     owner = "openslide";
     repo = "openslide-python";
     rev = "v${version}";
-    sha256 = "1is8g8vy8s1xgfw8q76gdx8ygwvj56cl0vxfd3lx0iys15wzs7a4";
+    sha256 = "0hjzmpdkii0kmndnix58ngd1fzskypzfc166gf970if0rkdxpqw7";
   };
 
-  patches = [ ./zero-size-test-skip.patch ];
-
   postPatch = ''
     sed -i 's|LoadLibrary('\'''libopenslide.so.0'\''')|LoadLibrary('\'''${openslide}/lib/libopenslide.so.0'\''')|' openslide/lowlevel.py
   '';
diff --git a/pkgs/openslide/zero-size-test-skip.patch b/pkgs/openslide/zero-size-test-skip.patch
deleted file mode 100644
index 4f9433c..0000000
--- a/pkgs/openslide/zero-size-test-skip.patch
+++ /dev/null
@@ -1,82 +0,0 @@
-From 4ea9211e10e9fc58d04bac909d73a2448c4a44ff Mon Sep 17 00:00:00 2001
-From: Benjamin Gilbert <bgilbert@cs.cmu.edu>
-Date: Tue, 24 Jan 2017 23:32:36 -0800
-Subject: [PATCH] tests: Avoid spurious failures with Pillow 3.4.0 - 3.4.2
-
----
- tests/__init__.py        | 10 ++++++++++
- tests/test_imageslide.py |  3 ++-
- tests/test_openslide.py  |  4 +++-
- 3 files changed, 15 insertions(+), 2 deletions(-)
-
-diff --git a/tests/__init__.py b/tests/__init__.py
-index cc2b217..d2158b3 100644
---- a/tests/__init__.py
-+++ b/tests/__init__.py
-@@ -19,6 +19,7 @@
- 
- from functools import wraps
- import os
-+from PIL import Image
- import unittest
- 
- try:
-@@ -28,6 +29,15 @@
-     have_optimizations = False
- 
- 
-+# PIL.Image cannot have zero width or height on Pillow 3.4.0 - 3.4.2
-+# https://github.com/python-pillow/Pillow/issues/2259
-+try:
-+    Image.new('RGBA', (1, 0))
-+    image_dimensions_cannot_be_zero = False
-+except ValueError:
-+    image_dimensions_cannot_be_zero = True
-+
-+
- def file_path(name):
-     return os.path.join(os.path.dirname(__file__), name)
- 
-diff --git a/tests/test_imageslide.py b/tests/test_imageslide.py
-index bbde9ec..de2a734 100644
---- a/tests/test_imageslide.py
-+++ b/tests/test_imageslide.py
-@@ -22,7 +22,7 @@
- from PIL import Image
- import unittest
- 
--from . import file_path
-+from . import file_path, image_dimensions_cannot_be_zero, skip_if
- 
- # Tests should be written to be compatible with Python 2.6 unittest.
- 
-@@ -104,6 +104,7 @@ def test_read_region(self):
-         self.assertEqual(self.osr.read_region((-10, -10), 0, (400, 400)).size,
-                 (400, 400))
- 
-+    @skip_if(image_dimensions_cannot_be_zero, 'Pillow issue #2259')
-     def test_read_region_size_dimension_zero(self):
-         self.assertEqual(self.osr.read_region((0, 0), 0, (400, 0)).size,
-                 (400, 0))
-diff --git a/tests/test_openslide.py b/tests/test_openslide.py
-index 3350c76..b80e2f5 100644
---- a/tests/test_openslide.py
-+++ b/tests/test_openslide.py
-@@ -25,7 +25,8 @@
- import sys
- import unittest
- 
--from . import file_path, have_optimizations, skip_if
-+from . import (file_path, have_optimizations, image_dimensions_cannot_be_zero,
-+        skip_if)
- 
- # Tests should be written to be compatible with Python 2.6 unittest.
- 
-@@ -110,6 +111,7 @@ def test_read_region(self):
-         self.assertEqual(self.osr.read_region((-10, -10), 1, (400, 400)).size,
-                 (400, 400))
- 
-+    @skip_if(image_dimensions_cannot_be_zero, 'Pillow issue #2259')
-     def test_read_region_size_dimension_zero(self):
-         self.assertEqual(self.osr.read_region((0, 0), 1, (400, 0)).size,
-                 (400, 0))