diff --git a/README.rst b/README.rst
index 98f603da2..de3f04f1c 100644
--- a/README.rst
+++ b/README.rst
@@ -22,6 +22,10 @@ Using python3 pip::
     redbot-setup
     redbot <name>
 
+To install requirements for voice::
+
+    pip install --process-dependency-links -U git+https://github.com/Cog-Creators/Red-DiscordBot@V3/develop#egg=red-discordbot[voice]
+
 To install all requirements for docs and tests::
 
-    pip install --process-dependency-links -U git+https://github.com/Cog-Creators/Red-DiscordBot@V3/develop#egg=red-discordbot[tests,docs]
+    pip install --process-dependency-links -U git+https://github.com/Cog-Creators/Red-DiscordBot@V3/develop#egg=red-discordbot[test,docs]
diff --git a/setup.py b/setup.py
index f11e2964d..244d1132c 100644
--- a/setup.py
+++ b/setup.py
@@ -107,6 +107,7 @@ setup(
     extras_require={
         'test': ['pytest>=3', 'pytest-asyncio'],
         'mongo': ['pymongo', 'motor'],
-        'docs': ['sphinx', 'sphinxcontrib-asyncio', 'sphinx_rtd_theme']
+        'docs': ['sphinx', 'sphinxcontrib-asyncio', 'sphinx_rtd_theme'],
+        'voice': ['PyNaCl']
     }
 )