diff --git a/README.rst b/README.rst
index 6039f1b..f248e65 100644
--- a/README.rst
+++ b/README.rst
@@ -6,7 +6,7 @@ a.k.a the Xcode project file, and make it unique and same on any
 machine.
 
 As you may know, the UUID generated by Xcode (a.k.a
-`rfc4122 <http://www.ietf.org/rfc/rfc4122.txt>`__) in the file is not
+`rfc4122 <https://tools.ietf.org/rfc/rfc4122.txt>`__) in the file is not
 unique for the same added file( or other entries like groups,build
 phases,etc.) on different machines, which makes it a developer's
 nightmare to merge and resolve conflicts in ``project.pbxproj``.
@@ -53,7 +53,7 @@ usage.
 Installation
 ------------
 - install from `PyPi <https://pypi.python.org/pypi/xUnique>`__:
-  
+
   .. code-block:: bash
 
       $ pip install xUnique
@@ -112,7 +112,7 @@ Xcode "build post-action"
 #.  choose ``New Run Script Action``
 #.  choose your selected scheme name in ``Provide build settings from``
 #.  input commands below:
-    
+
     .. code-block:: bash
 
       $ xunique "${PROJECT_FILE_PATH}/project.pbxproj"
@@ -126,10 +126,10 @@ Xcode "build post-action"
 CocoaPods users
 ~~~~~~~~~~~~~~~
 
-If your project uses CocoaPods AND added ``Pods`` directory to source control, you may also need to uniquify ``Pods.xcodeproj``: 
+If your project uses CocoaPods AND added ``Pods`` directory to source control, you may also need to uniquify ``Pods.xcodeproj``:
 
 -  Xcode "build post-action" : add extra command below
-        
+
    .. code-block:: bash
 
      $ xunique "${PODS_ROOT}/Pods.xcodeproj"