diff --git a/PIL/JpegPresets.py b/PIL/JpegPresets.py
index 66cbde117..c5a36b914 100644
--- a/PIL/JpegPresets.py
+++ b/PIL/JpegPresets.py
@@ -27,7 +27,7 @@ Subsampling
 
 Subsampling is the practice of encoding images by implementing less resolution
 for chroma information than for luma information.
-(ref.: http://en.wikipedia.org/wiki/Chroma_subsampling)
+(ref.: https://en.wikipedia.org/wiki/Chroma_subsampling)
 
 Possible subsampling values are 0, 1 and 2 that correspond to 4:4:4, 4:2:2 and
 4:1:1 (or 4:2:0?).
@@ -41,8 +41,8 @@ Quantization tables
 
 They are values use by the DCT (Discrete cosine transform) to remove
 *unnecessary* information from the image (the lossy part of the compression).
-(ref.: http://en.wikipedia.org/wiki/Quantization_matrix#Quantization_matrices,
-http://en.wikipedia.org/wiki/JPEG#Quantization)
+(ref.: https://en.wikipedia.org/wiki/Quantization_matrix#Quantization_matrices,
+https://en.wikipedia.org/wiki/JPEG#Quantization)
 
 You can get the quantization tables of a JPEG with::
 
diff --git a/docs/build.rst b/docs/build.rst
index 1110fb792..e4c2293a9 100644
--- a/docs/build.rst
+++ b/docs/build.rst
@@ -52,12 +52,12 @@ Compilers
 Download and install:
 
 * `Microsoft Windows SDK for Windows 7 and .NET Framework 3.5
-  SP1 <http://www.microsoft.com/en-us/download/details.aspx?id=3138>`_
+  SP1 <https://www.microsoft.com/en-us/download/details.aspx?id=3138>`_
 
 * `Microsoft Windows SDK for Windows 7 and .NET Framework
-  4 <http://www.microsoft.com/en-us/download/details.aspx?id=8279>`_
+  4 <https://www.microsoft.com/en-us/download/details.aspx?id=8279>`_
 
-* `CMake-2.8.10.2-win32-x86.exe <http://www.cmake.org/cmake/resources/software.html>`_
+* `CMake-2.8.10.2-win32-x86.exe <https://cmake.org/download/>`_
 
 The samples and the .NET SDK portions aren't required, just the
 compilers and other tools. UNDONE -- check exact wording.
@@ -83,7 +83,7 @@ Once the dependencies are built, run `python build.py --clean` to
 build and install Pillow in virtualenvs for each python
 build. `build.py --dist` will build Windows installers instead of
 installing into virtualenvs.
- 
+
 UNDONE -- suppressed output, what about failures.
 
 Testing Pillow
diff --git a/docs/reference/ImagePath.rst b/docs/reference/ImagePath.rst
index 03aa39811..978db4caf 100644
--- a/docs/reference/ImagePath.rst
+++ b/docs/reference/ImagePath.rst
@@ -36,7 +36,7 @@ vector data. Path objects can be passed to the methods on the
     **distance** is measured as `Manhattan distance`_ and defaults to two
     pixels.
 
-.. _Manhattan distance: http://en.wikipedia.org/wiki/Manhattan_distance
+.. _Manhattan distance: https://en.wikipedia.org/wiki/Manhattan_distance
 
 .. py:method:: PIL.ImagePath.Path.getbbox()