diff --git a/graphviz-2.20.2-interpreter_names.patch b/graphviz-2.20.2-interpreter_names.patch
index ee884eb..5bf4ca8 100644
--- a/graphviz-2.20.2-interpreter_names.patch
+++ b/graphviz-2.20.2-interpreter_names.patch
@@ -1,4 +1,6 @@
---- tclpkg/gv/demo/modgraph.lua
+Index: tclpkg/gv/demo/modgraph.lua
+===================================================================
+--- tclpkg/gv/demo/modgraph.lua.orig
 +++ tclpkg/gv/demo/modgraph.lua
 @@ -1,4 +1,4 @@
 -#!/usr/bin/lua
@@ -6,3 +8,13 @@
  
  -- display the kernel module dependencies
  
+Index: tclpkg/gv/demo/modgraph.py
+===================================================================
+--- tclpkg/gv/demo/modgraph.py.orig
++++ tclpkg/gv/demo/modgraph.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/python
++#!/usr/bin/python3
+ 
+ # display the kernel module dependencies
+ 
diff --git a/graphviz.changes b/graphviz.changes
index 23c38a6..7bdddc7 100644
--- a/graphviz.changes
+++ b/graphviz.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Jun 28 06:30:57 UTC 2021 - Steve Kowalik <steven.kowalik@suse.com>
+
+- Update graphviz-2.20.2-interpreter_names.patch so the Python demo
+  uses Python 3.
+
 -------------------------------------------------------------------
 Wed Jun  2 08:03:32 UTC 2021 - Christophe Giboudeaux <christophe@krop.fr>
 
diff --git a/graphviz.spec b/graphviz.spec
index 395cc07..fa89794 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -1,5 +1,5 @@
 #
-# spec file for package graphviz
+# spec file
 #
 # Copyright (c) 2021 SUSE LLC
 #
@@ -344,6 +344,7 @@ The graphviz-devel package contains all that's necessary for developing
 programs that use the graphviz libraries including man3 pages.
 
 
+
 #autosetup breaks graphviz-addons
 
 %prep