diff --git a/Library/Homebrew/cmd/cleanup.rb b/Library/Homebrew/cmd/cleanup.rb
index e0f31d7973..786c082753 100644
--- a/Library/Homebrew/cmd/cleanup.rb
+++ b/Library/Homebrew/cmd/cleanup.rb
@@ -66,7 +66,11 @@ module Homebrew
 
   def cleanup_cache
     return unless HOMEBREW_CACHE.directory?
+    prune = ARGV.value "prune"
+    time = Time.now - 60 * 60 * 24 * prune.to_i
     HOMEBREW_CACHE.children.select(&:file?).each do |file|
+      next cleanup_path(file) { file.unlink } if prune && file.mtime < time
+
       next unless (version = file.version)
       next unless (name = file.basename.to_s[/(.*)-(?:#{Regexp.escape(version)})/, 1])
 
diff --git a/Library/Homebrew/manpages/brew.1.md b/Library/Homebrew/manpages/brew.1.md
index e155ac8b08..8f1f2b1618 100644
--- a/Library/Homebrew/manpages/brew.1.md
+++ b/Library/Homebrew/manpages/brew.1.md
@@ -53,7 +53,7 @@ Note that these flags should only appear after a command.
   * `cat` <formula>:
     Display the source to <formula>.
 
-  * `cleanup [--force] [-ns]` [<formulae>]:
+  * `cleanup [--force] [--prune=<days>] [-ns]` [<formulae>]:
     For all installed or specific formulae, remove any older versions from the
     cellar. By default, does not remove out-of-date keg-only brews, as other
     software may link directly to specific versions. In addition old downloads from
@@ -61,6 +61,8 @@ Note that these flags should only appear after a command.
 
     If `--force` is passed, remove out-of-date keg-only brews as well.
 
+    If `--prune=<days>` is specified, remove all cache files older than <days>.
+
     If `-n` is passed, show what would be removed, but do not actually remove anything.
 
     If `-s` is passed, scrubs the cache, removing downloads for even the latest
diff --git a/share/man/man1/brew.1 b/share/man/man1/brew.1
index 98f9a71612..8981bbdfff 100644
--- a/share/man/man1/brew.1
+++ b/share/man/man1/brew.1
@@ -1,7 +1,7 @@
 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BREW" "1" "March 2015" "Homebrew" "brew"
+.TH "BREW" "1" "April 2015" "Homebrew" "brew"
 .
 .SH "NAME"
 \fBbrew\fR \- The missing package manager for OS X
@@ -61,13 +61,16 @@ If \fB\-\-strict\fR is passed, additional checks are run\. This should be used w
 Display the source to \fIformula\fR\.
 .
 .TP
-\fBcleanup [\-\-force] [\-ns]\fR [\fIformulae\fR]
+\fBcleanup [\-\-force] [\-\-prune=<days>] [\-ns]\fR [\fIformulae\fR]
 For all installed or specific formulae, remove any older versions from the cellar\. By default, does not remove out\-of\-date keg\-only brews, as other software may link directly to specific versions\. In addition old downloads from the Homebrew download\-cache are deleted\.
 .
 .IP
 If \fB\-\-force\fR is passed, remove out\-of\-date keg\-only brews as well\.
 .
 .IP
+If \fB\-\-prune=<days>\fR is specified, remove all cache files older than \fIdays\fR\.
+.
+.IP
 If \fB\-n\fR is passed, show what would be removed, but do not actually remove anything\.
 .
 .IP