diff --git a/python-matplotlib.changes b/python-matplotlib.changes
index 316b6df..a385315 100644
--- a/python-matplotlib.changes
+++ b/python-matplotlib.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Aug 29 14:37:16 UTC 2013 - jmatejek@suse.com
+
+- add Requires: python-pyparsing
+  (the pyparsing module is required for mathtext rendering)
+
 -------------------------------------------------------------------
 Wed Aug 21 05:25:57 UTC 2013 - highwaystar.ru@gmail.com
 
diff --git a/python-matplotlib.spec b/python-matplotlib.spec
index 4dac49f..8e83873 100644
--- a/python-matplotlib.spec
+++ b/python-matplotlib.spec
@@ -47,6 +47,7 @@ BuildRequires:  tk
 BuildRequires:  tk-devel
 Requires:       python-dateutil
 Requires:       python-numpy >= 1.2.1
+Requires:       python-pyparsing
 Requires:       python-tz
 %py_requires
 %if 0%{?sles_version} == 11