diff --git a/static/install/cli.html b/static/install/cli.html
index 6b2d28ae..35147027 100644
--- a/static/install/cli.html
+++ b/static/install/cli.html
@@ -284,6 +284,9 @@ Installed as /home/username/platform-tools/fastboot</pre>
 
                 <p>Connect the phone to the computer. On Linux, you'll need to do this again if
                 you didn't have the udev rules set up when you connected it.</p>
+
+                <p>On Windows, you may need to install a driver for fastboot. You can obtain this
+                via the Windows Update optional updates if you don't already have it.</p>
             </section>
 
             <section id="unlocking-the-bootloader">
diff --git a/static/install/web.html b/static/install/web.html
index 52ef18aa..593415b7 100644
--- a/static/install/web.html
+++ b/static/install/web.html
@@ -131,6 +131,9 @@
 
                 <p>Connect the phone to the computer. On Linux, you'll need to do this again if
                 you didn't have the udev rules set up when you connected it.</p>
+
+                <p>On Windows, you may need to install a driver for fastboot. You can obtain this
+                via the Windows Update optional updates if you don't already have it.</p>
             </section>
 
             <section id="unlocking-the-bootloader">