diff --git a/README.rst b/README.rst
index f59be51..0e86162 100644
--- a/README.rst
+++ b/README.rst
@@ -137,6 +137,9 @@ Let's grab some text that's rendered by JavaScript:
     >>> r.html.search('Python 2 will retire in only {months} months!')['months']
     '<time>25</time>'
 
+Note, the first time you ever run the ``render()`` method, it will download
+Chromium into your home directory (e.g. ``~/.pyppeteer/``). This only happens
+once.
 
 Using without Requests
 ======================
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 883e538..0d6969e 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -158,6 +158,9 @@ Let's grab some text that's rendered by JavaScript:
     >>> r.html.search('Python 2 will retire in only {months} months!')['months']
     '<time>25</time>'
 
+Note, the first time you ever run the ``render()`` method, it will download
+Chromium into your home directory (e.g. ``~/.pyppeteer/``).
+
 
 Using without Requests
 ======================