diff --git a/README.md b/README.md
index ee416be..e4526a3 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ conda install pip
     * `pandas`
     * `scipy`
     * `sphinx`
-    * `sphinx_rtd_theme==0.5.2`
+    * `sphinx_rtd_theme==2.0.0`
     * `metpy`
     * `netCDF4`
     * `astropy`
diff --git a/docs/conf.py b/docs/conf.py
index 1bf8458..e73d6e1 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -108,11 +108,7 @@
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
 # to fix long table-wdith problem
-html_context = {
-    'css_files': [
-        '_static/theme_overrides.css',  # override wide tables in RTD theme
-        ],
-     }
+html_css_files = ['theme-overrides.css']  # override wide tables in RTD theme
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
@@ -194,4 +190,4 @@
 # -- Options for todo extension ----------------------------------------------
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
-todo_include_todos = True 
\ No newline at end of file
+todo_include_todos = True 
diff --git a/setup.py b/setup.py
index b2340d6..3e88bc2 100644
--- a/setup.py
+++ b/setup.py
@@ -13,5 +13,5 @@ def readme():
     packages=['instrupy'],
     scripts=[ 
     ],
-    install_requires=['shapely', 'numpy', 'pandas', 'scipy', 'lowtran==2.4.1', 'sphinx', 'sphinx_rtd_theme==0.5.2', 'netCDF4','metpy','astropy','deepdiff'] 
+    install_requires=['shapely', 'numpy', 'pandas', 'scipy', 'lowtran==2.4.1', 'sphinx', 'sphinx_rtd_theme==2.0.0', 'netCDF4','metpy','astropy','deepdiff'] 
 )