diff --git a/_sources/index.rst.txt b/_sources/index.rst.txt
index 6abd875..d8c4e7f 100644
--- a/_sources/index.rst.txt
+++ b/_sources/index.rst.txt
@@ -51,7 +51,7 @@ These are specified in the environment.yml file that is used to create the 'pyth
    - metpy
    - pint
    - h5py
-   - nbconvert 4.1
+   - nbconvert 4.1+
    - siphon
    - xarray
    - ffmpeg
diff --git a/index.html b/index.html
index 0d52406..337fe6a 100644
--- a/index.html
+++ b/index.html
@@ -200,7 +200,7 @@
 <li><p>metpy</p></li>
 <li><p>pint</p></li>
 <li><p>h5py</p></li>
-<li><p>nbconvert 4.1</p></li>
+<li><p>nbconvert 4.1+</p></li>
 <li><p>siphon</p></li>
 <li><p>xarray</p></li>
 <li><p>ffmpeg</p></li>