diff --git a/extra/builder/cleanup/cleanup.factor b/extra/builder/cleanup/cleanup.factor
index 327b90e01f..e601506fb4 100644
--- a/extra/builder/cleanup/cleanup.factor
+++ b/extra/builder/cleanup/cleanup.factor
@@ -8,6 +8,8 @@ IN: builder.cleanup
 
 SYMBOL: builder-debug
 
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
 : compress-image ( -- ) { "bzip2" my-boot-image-name } to-strings try-process ;
 
 : delete-child-factor ( -- )
diff --git a/extra/builder/common/common.factor b/extra/builder/common/common.factor
index e3c207eaaa..474606e451 100644
--- a/extra/builder/common/common.factor
+++ b/extra/builder/common/common.factor
@@ -7,6 +7,10 @@ IN: builder.common
 
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
+SYMBOL: upload-to-factorcode
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
 SYMBOL: builds-dir
 
 : builds ( -- path )
@@ -21,15 +25,6 @@ VAR: stamp
 : builds/factor ( -- path ) builds "factor" append-path ;
 : build-dir     ( -- path ) builds stamp>   append-path ;
 
-: create-build-dir ( -- )
-  datestamp >stamp
-  build-dir make-directory ;
-  
-: enter-build-dir  ( -- ) build-dir set-current-directory ;
-
-: clone-builds-factor ( -- )
-  { "git" "clone" builds/factor } to-strings try-process ;
-
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
 : prepare-build-machine ( -- )
@@ -57,8 +52,3 @@ SYMBOL: status
   { status-vm status-boot status-test status-build status-release status }
     [ off ]
   each ;
-
-! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-SYMBOL: upload-to-factorcode
-
diff --git a/extra/builder/email/email.factor b/extra/builder/email/email.factor
index eed48cb177..ecde47f8f7 100644
--- a/extra/builder/email/email.factor
+++ b/extra/builder/email/email.factor
@@ -8,6 +8,8 @@ IN: builder.email
 SYMBOL: builder-from
 SYMBOL: builder-recipients
 
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
 : subject-status ( -- str ) status get [ "report" ] [ "error" ] if ;
 
 : subject ( -- str ) { "builder@" host-name* ": " subject-status } to-string ;
diff --git a/extra/update/update.factor b/extra/update/update.factor
new file mode 100644
index 0000000000..f186837548
--- /dev/null
+++ b/extra/update/update.factor
@@ -0,0 +1,62 @@
+
+USING: kernel system sequences io.files io.launcher bootstrap.image
+       builder.util builder.release.branch ;
+
+IN: update
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: run-command ( cmd -- ) to-strings try-process ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: git-pull-clean ( -- )
+  image parent-directory
+    [
+      { "git" "pull" "git://factorcode.org/git/factor.git" branch-name }
+      run-command
+    ]
+  with-directory ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: remote-clean-image ( -- url )
+  "http://factorcode.org/images/clean/" my-boot-image-name append ;
+
+: download-clean-image ( -- ) { "wget" remote-clean-image } run-command ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: make-clean ( -- ) { gnu-make "clean" } run-command ;
+: make       ( -- ) { gnu-make         } run-command ;
+: boot       ( -- ) { "./factor" { "-i=" my-boot-image-name } } run-command ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: rebuild ( -- )
+  image parent-directory
+    [
+      download-clean-image
+      make-clean
+      make
+      boot
+    ]
+  with-directory ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: update ( -- )
+  image parent-directory
+    [
+      git-id
+      git-pull-clean
+      git-id
+      = not
+        [ rebuild ]
+      when
+    ]
+  with-directory ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+MAIN: update
\ No newline at end of file