diff --git a/.circleci/config.yml b/.circleci/config.yml
index f58cbb027..422b720a5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,7 +29,7 @@ jobs:
             name: Build docs
             command: cd doc/ && make html
         - persist_to_workspace:
-            root: docs/_build
+            root: doc/_build
             paths: html
 
 workflows:
diff --git a/alibi/__init__.py b/alibi/__init__.py
index 446d9fd1b..b8023d8bc 100644
--- a/alibi/__init__.py
+++ b/alibi/__init__.py
@@ -1,2 +1 @@
 __version__ = '0.0.1'
-
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 1c894d9f5..2c1d03258 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -14,7 +14,7 @@
 #
 import os
 import sys
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath('../..'))
 
 
 # -- Project information -----------------------------------------------------
diff --git a/setup.cfg b/setup.cfg
index 6c6ef3681..950b161ed 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -6,3 +6,11 @@ addopts =
     --tb native
     -W ignore
     --cov=alibi
+
+[flake8]
+max-line-length = 120
+exclude =
+    # sphinx configuration
+    doc/source/conf.py
+    # post-test
+    .eggs/
diff --git a/tests/.keep b/tests/.keep
deleted file mode 100644
index e69de29bb..000000000
diff --git a/tests/test_placeholder.py b/tests/test_placeholder.py
new file mode 100644
index 000000000..201975fcc
--- /dev/null
+++ b/tests/test_placeholder.py
@@ -0,0 +1,2 @@
+def test_placeholder():
+    pass