diff --git a/.gitignore b/.gitignore
index 7ad6038..2c1f13d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 nltk-2.0b8.tar.gz
 /nltk-2.0b9.tar.gz
+/nltk-2.0.1rc1.tar.gz
diff --git a/python-nltk.spec b/python-nltk.spec
index 9eb3350..9f9c63b 100644
--- a/python-nltk.spec
+++ b/python-nltk.spec
@@ -1,8 +1,8 @@
-%global prerel b9
+%global prerel rc1
 Name:           python-nltk
 Epoch:          1
-Version:        2.0
-Release:        0.3.%{prerel}%{?dist}
+Version:        2.0.1
+Release:        0.4.%{prerel}%{?dist}
 Summary:        Natural Language Toolkit
 
 Group:          Development/Libraries
@@ -12,7 +12,7 @@ Source0:        http://nltk.googlecode.com/files/nltk-%{version}%{?prerel}.tar.g
 BuildArch:      noarch
 
 BuildRequires:  python2-devel PyYAML
-Requires:       numpy python-matplotlib PyYAML
+Requires:       numpy python-matplotlib PyYAML tkinter
 
 %description
 NLTK is a Python package that simplifies the construction of programs
@@ -34,7 +34,7 @@ research projects.
 %install
 rm -rf $RPM_BUILD_ROOT
 %{__python} setup.py install --skip-build --root $RPM_BUILD_ROOT
-
+sed -i -e '/^#! *\//, 1d' $RPM_BUILD_ROOT%{python_sitelib}/nltk/corpus/reader/knbc.py
 
 %clean
 rm -rf $RPM_BUILD_ROOT
@@ -48,6 +48,10 @@ rm -rf $RPM_BUILD_ROOT
 
 
 %changelog
+* Tue Apr 12 2011 Robin Lee <cheeselee@fedoraproject.org> - 1:2.0.1-0.4.rc1
+- Update to 2.0.1rc1
+- Requires tkinter
+
 * Mon Aug 30 2010 Robin Lee <robinlee.sysu@gmail.com> - 1:2.0-0.3.b9
 - update to 2.0b9
 
diff --git a/sources b/sources
index 407d1c5..e4426bd 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-7b9a083b3b37cff3b84ca9c231ab131b  nltk-2.0b9.tar.gz
+1d08459c31b0bf875a73cea81eaa2dd4  nltk-2.0.1rc1.tar.gz