diff --git a/README.org b/README.org
index 9782a54..f24b2ac 100644
--- a/README.org
+++ b/README.org
@@ -11,3 +11,8 @@ It also, hopefully soon, will serve as an ActivityStreams validator.
 More things will go here in the future, in the meanwhile maybe see
 [[file:./activipy.org][activipy.org]] in this directory for braindumps and tasks.
 
+## Development
+
+Install all the dependencies as follows:
+
+    pip install -e .[dev]
diff --git a/setup.py b/setup.py
index 8a2a1ef..0aa195a 100644
--- a/setup.py
+++ b/setup.py
@@ -27,14 +27,13 @@
     include_package_data=True,
     install_requires=[
         "PyLD",
-        "pytest",
-        "sphinx",
-        ],
-    # @@: Can we reproduce this in Guix?
-    entry_points="""\
-        [console_scripts]
-        activipy_tester = activipy.testcli:main
-        """,
+    ],
+    extras_require={
+        "dev": [
+            "pytest",
+            "sphinx",
+        ]
+    },
     license="Apache v2",
     author="Christopher Allan Webber",
     author_email="cwebber@dustycloud.org",