diff --git a/.gitignore b/.gitignore
index e1b18df..a8e2922 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ build/
 dist/
 .eggs/
 sfs.egg-info/
+doc/sfs.*.rst
diff --git a/.travis.yml b/.travis.yml
index 11dc995..44dc3e1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,4 +30,4 @@ script:
   - python3 -m pytest
   - python3 doc/examples/run_all.py
   # This executes the example notebooks and runs the doctests:
-  - python3 -m sphinx doc/ _build/ -b doctest
+  - python3 -m sphinx doc/ _build/ -b doctest -W
diff --git a/doc/conf.py b/doc/conf.py
index 07b7c4f..6a403c8 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -173,7 +173,7 @@
 #keep_warnings = False
 
 jinja_define = """
-{% set docname = env.doc2path(env.docname, base='doc') %}
+{% set docname = 'doc/' + env.doc2path(env.docname, base=None) %}
 {% set latex_href = ''.join([
     '\href{https://github.com/sfstoolbox/sfs-python/blob/',
     env.config.release,
@@ -219,7 +219,7 @@
 
 def setup(app):
     """Include custom theme files to sphinx HTML header"""
-    app.add_stylesheet('css/title.css')
+    app.add_css_file('css/title.css')
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
diff --git a/doc/requirements.txt b/doc/requirements.txt
index e2e3ce9..082810e 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
-Sphinx>=1.3.6
+Sphinx>=1.8
 Sphinx-RTD-Theme
 nbsphinx
 ipykernel