diff --git a/.travis.yml b/.travis.yml
index 0c36370..e423bfb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 python:
-- "3.5.1"
+- "3.6.5"
 install:
 - pip install -r requirements.txt
 script:
diff --git a/deconstrst/__init__.py b/deconstrst/__init__.py
index 9348dd8..d6806ef 100755
--- a/deconstrst/__init__.py
+++ b/deconstrst/__init__.py
@@ -4,6 +4,7 @@
 import sys
 
 from pip import pip
+from setuptools import setup
 from deconstrst.deconstrst import build, get_conf_builder
 from deconstrst.config import Configuration
 
@@ -18,7 +19,8 @@ def main(directory=False):
 
     if config.content_root:
         if directory and directory != config.content_root:
-            print("Warning: Overriding CONTENT_ROOT [{}] with argument [{}].".format(config.content_root, directory))
+            print("Warning: Overriding CONTENT_ROOT [{}] with argument [{}].".format(
+                config.content_root, directory))
         else:
             os.chdir(config.content_root)
     elif directory:
@@ -52,6 +54,7 @@ def main(directory=False):
         print(file=sys.stderr)
         sys.exit(1)
 
+
 def install_requirements():
     """
     Install non-colliding dependencies from a "requirements.txt" file found at
@@ -79,8 +82,18 @@ def install_requirements():
 
             dependencies.append(stripped)
 
-    print("Installing dependencies from {}: {}.".format(reqfile, ', '.join(dependencies)))
+    print("Installing dependencies from {}: {}.".format(
+        reqfile, ', '.join(dependencies)))
     pip.main(['install'] + dependencies)
 
+
 if __name__ == '__main__':
+    setup(
+        entry_points={
+            'sphinx.builders': [
+                'deconst-serial = DeconstSerialJSONBuilder',
+                'deconst-single = DeconstSingleJSONBuilder',
+            ],
+        }
+    )
     main()
diff --git a/deconstrst/builders/serial.py b/deconstrst/builders/serial.py
index 3427d53..78f0941 100644
--- a/deconstrst/builders/serial.py
+++ b/deconstrst/builders/serial.py
@@ -13,6 +13,7 @@
 
 TOC_DOCNAME = '_toc'
 
+
 class DeconstSerialJSONBuilder(JSONHTMLBuilder):
     """
     Custom Sphinx builder that generates Deconst-compatible JSON documents.
@@ -87,7 +88,8 @@ def write_context(self, context):
 
         # If this repository has a TOC, reference it as an addenda.
         if self.toc_envelope:
-            envelope.add_addenda('repository_toc', self.toc_envelope.content_id)
+            envelope.add_addenda(
+                'repository_toc', self.toc_envelope.content_id)
 
         self.dump_context(envelope.serialization_payload(),
                           envelope.serialization_path())
@@ -161,8 +163,10 @@ def _toc_envelope(self):
         if full_render:
             self.secnumbers = self.env.toc_secnumbers.get(docname, {})
             self.fignumbers = self.env.toc_fignumbers.get(docname, {})
-            self.imgpath = relative_uri(self.get_target_uri(docname), '_images')
-            self.dlpath = relative_uri(self.get_target_uri(docname), '_downloads')
+            self.imgpath = relative_uri(
+                self.get_target_uri(docname), '_images')
+            self.dlpath = relative_uri(
+                self.get_target_uri(docname), '_downloads')
             self.current_docname = docname
 
             rendered_toc = self.render_partial(doctree)['body']
@@ -178,3 +182,7 @@ def _toc_envelope(self):
                         deconst_config=self.deconst_config,
                         per_page_meta={'deconstunsearchable': True},
                         docwriter=self._publisher.writer)
+
+
+def setup(app):
+    app.add_builder(DeconstSerialJSONBuilder)
diff --git a/deconstrst/builders/single.py b/deconstrst/builders/single.py
index 81fd584..2e576f5 100644
--- a/deconstrst/builders/single.py
+++ b/deconstrst/builders/single.py
@@ -84,3 +84,7 @@ def write_context(self, context):
 
         with open(envelope.serialization_path(), 'w', encoding="utf-8") as f:
             jsonimpl.dump(envelope.serialization_payload(), f)
+
+
+def setup(app):
+    app.add_builder(DeconstSerialJSONBuilder)
diff --git a/deconstrst/deconstrst.py b/deconstrst/deconstrst.py
index 431aadc..ad676c6 100755
--- a/deconstrst/deconstrst.py
+++ b/deconstrst/deconstrst.py
@@ -5,10 +5,10 @@
 import urllib.parse
 
 import requests
+from setuptools import setup
 from deconstrst.builders.serial import DeconstSerialJSONBuilder
 from deconstrst.builders.single import DeconstSingleJSONBuilder
 from sphinx.application import Sphinx
-from sphinx.builders import BUILTIN_BUILDERS
 
 DEFAULT_BUILDER = 'deconst-serial'
 
@@ -19,8 +19,8 @@ def build(srcdir, destdir):
     """
 
     # I am a terrible person
-    BUILTIN_BUILDERS['deconst-serial'] = DeconstSerialJSONBuilder
-    BUILTIN_BUILDERS['deconst-single'] = DeconstSingleJSONBuilder
+    # BUILTIN_BUILDERS['deconst-serial'] = DeconstSerialJSONBuilder
+    # BUILTIN_BUILDERS['deconst-single'] = DeconstSingleJSONBuilder
 
     conf_builder = get_conf_builder(srcdir)
     doctreedir = os.path.join(destdir, '.doctrees')
@@ -34,6 +34,7 @@ def build(srcdir, destdir):
 
     return app.statuscode
 
+
 def get_conf_builder(srcdir):
     with open(os.path.join(srcdir, 'conf.py'), encoding="utf-8") as conf_file:
         conf_data = conf_file.read()
@@ -47,3 +48,17 @@ def get_conf_builder(srcdir):
         """
 
     return locals().get('builder', DEFAULT_BUILDER)
+
+
+def setup(app):
+    app.setup_extension('sphinx.builders.html')
+    app.add_builder(DeconstSerialJSONBuilder)
+    app.add_builder(DeconstSingleJSONBuilder)
+    setup(
+        entry_points={
+            'sphinx.builders': [
+                'deconst-serial = DeconstSerialJSONBuilder',
+                'deconst-single = DeconstSingleJSONBuilder',
+            ],
+        }
+    )
diff --git a/requirements.txt b/requirements.txt
index 03a1685..85a3f21 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,15 +1,18 @@
-alabaster==0.7.7
-Babel==2.3.4
-certifi==2016.2.28
-docutils==0.12
-imagesize==0.7.1
-Jinja2==2.8
-MarkupSafe==0.23
-Pygments==2.1.3
-pytz==2016.4
-requests==2.10.0
-six==1.10.0
+alabaster==0.7.10
+Babel==2.5.3
+certifi==2018.1.18
+docutils==0.14
+imagesize==1.0.0
+Jinja2==2.10
+MarkupSafe==1.0
+pbr==4.0.2
+Pygments==2.2.0
+pytz==2018.4
+PyYAML==3.12
+reno==2.7.0
+requests==2.18.4
+six==1.11.0
 snowballstemmer==1.2.1
-Sphinx==1.4.1
-sphinx-rtd-theme==0.1.9
+Sphinx==1.7.2
+sphinx_rtd_theme==0.3.0
 termcolor==1.1.0
diff --git a/test/requirements/src/requirements.txt b/test/requirements/src/requirements.txt
index b884816..85a3f21 100644
--- a/test/requirements/src/requirements.txt
+++ b/test/requirements/src/requirements.txt
@@ -1,17 +1,18 @@
-alabaster==0.7.7
-Babel==2.3.4
-docutils==0.12
-imagesize==0.7.1
-Jinja2==2.8
-MarkupSafe==0.23
-pbr==1.10.0
-Pygments==2.1.3
-pytz==2016.4
-PyYAML==3.11
-reno==1.6.2
-requests==2.10.0
-six==1.10.0
+alabaster==0.7.10
+Babel==2.5.3
+certifi==2018.1.18
+docutils==0.14
+imagesize==1.0.0
+Jinja2==2.10
+MarkupSafe==1.0
+pbr==4.0.2
+Pygments==2.2.0
+pytz==2018.4
+PyYAML==3.12
+reno==2.7.0
+requests==2.18.4
+six==1.11.0
 snowballstemmer==1.2.1
-Sphinx==1.4.1
-sphinx-rtd-theme==0.1.9
+Sphinx==1.7.2
+sphinx_rtd_theme==0.3.0
 termcolor==1.1.0