diff --git a/src/docs/installation_guide.diviner b/src/docs/installation_guide.diviner
index a67cb382be..4f5af7997d 100644
--- a/src/docs/installation_guide.diviner
+++ b/src/docs/installation_guide.diviner
@@ -14,7 +14,7 @@ Phabricator is a LAMP application suite, so you basically need LAMP:
     patches.) Phabricator has active contributors running it on Mac OS X, Amazon
     Linux, Ubuntu, RHEL and CentOS; if you run into issues on other flavors,
     send patches or complaints.
-  - **Apache** (or nginx, or lighttpd): You need Apache (or another
+  - **Apache** (or nginx, or lighttpd): You need Apache 2.2.7+ (or another
     tested webserver). You can probably use something else, but you're
     on your own.
   - **MySQL**: You need MySQL.