diff --git a/requirements.txt b/requirements.txt
index 06516ee0d7b..9d002744495 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+# GRPC Python setup requirements
 enum34>=1.0.4
 futures>=2.2.0
 cython>=0.23
diff --git a/setup.cfg b/setup.cfg
index 52b6b509007..add6ee87492 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,5 @@
+# Setup settings for GRPC Python
+
 [coverage:run]
 plugins = Cython.Coverage
 
diff --git a/tox.ini b/tox.ini
index 8bb5fc2bc60..f89f34e1319 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,3 +1,4 @@
+# GRPC Python tox (test environment) settings
 [tox]
 skipsdist = true
 envlist = py27