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-rw-r--r--user_guide_src/source/installation/upgrade_300.rst7
1 files changed, 4 insertions, 3 deletions
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 94385978e..a88d34e39 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -340,9 +340,10 @@ Following numerous vulnerability reports, the :doc:`Encrypt Library <../librarie
been deprecated and a new, :doc:`Encryption Library <../libraries/encryption>` is added to take
its place.
-The new library requires either the `MCrypt extension <http://php.net/mcrypt>`_ or PHP 5.3.3 and
-the `OpenSSL extension <http://php.net/openssl>`_. While this might be rather inconvenient, it is
-a requirement that allows us to have properly implemented cryptographic functions.
+The new library requires either the `MCrypt extension <http://php.net/mcrypt>`_ (and /dev/urandom
+availability) or PHP 5.3.3 and the `OpenSSL extension <http://php.net/openssl>`_.
+While this might be rather inconvenient, it is a requirement that allows us to have properly
+implemented cryptographic functions.
.. note:: The :doc:`Encrypt Library <../libraries/encrypt>` is still available for the purpose
of keeping backwards compatibility.