diff --git a/paraview.changes b/paraview.changes
index 1879833..daf768b 100644
--- a/paraview.changes
+++ b/paraview.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Feb  4 10:59:39 UTC 2014 - badshah400@gmail.com
+
+- Build with system zope (python-zope.interface) and twisted
+  (python-twisted); introduces BuildRequires and Requires on the
+  two packages
+- Remove unnecessary Requires on python-matplotlib.
+
 -------------------------------------------------------------------
 Sun Feb  2 00:19:56 UTC 2014 - badshah400@gmail.com
 
diff --git a/paraview.spec b/paraview.spec
index 2d04f54..f6ce0ac 100644
--- a/paraview.spec
+++ b/paraview.spec
@@ -51,6 +51,8 @@ BuildRequires:  python-devel
 BuildRequires:  python-matplotlib
 %py_requires
 BuildRequires:  fdupes
+BuildRequires:  python-twisted
+BuildRequires:  python-zope.interface
 BuildRequires:  qt4-assistant-adp-devel
 BuildRequires:  readline-devel
 BuildRequires:  tk-devel
@@ -60,7 +62,8 @@ Requires:       gnuplot
 Requires:       graphviz
 Requires:       python
 Requires:       python-base
-Requires:       python-matplotlib
+Requires:       python-twisted
+Requires:       python-zope.interface
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -141,6 +144,8 @@ export CXXFLAGS="%{optflags}"
         -DVTK_USE_SYSTEM_PNG:BOOL=ON \\\
         -DVTK_USE_SYSTEM_TIFF:BOOL=ON \\\
         -DVTK_USE_SYSTEM_ZLIB:BOOL=ON \\\
+        -DVTK_USE_SYSTEM_ZOPE:BOOL=ON \\\
+        -DVTK_USE_SYSTEM_TWISTED:BOOL=ON \\\
         -DBUILD_DOCUMENTATION:BOOL=ON \\\
         -DBUILD_EXAMPLES:BOOL=ON \\\
         -DBUILD_TESTING:BOOL=OFF