Add six module to requirements for building docs

2 files changed, 1 insertions, 3 deletions

diff --git a/docs/conf.py b/docs/conf.py
index d1e20119..0627f94c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -163,6 +163,3 @@ texinfo_documents = [
 # -- Options for Extensions  -------------------------------------------
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {'http://docs.python.org/': None}
-
-# Mock 3rd-party dependencies so they don't need to be installed for building docs
-autodoc_mock_imports = ['six']
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 210dfec5..8a8af629 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1,2 @@
 pyparsing
+six