diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index 9218bdc52..ba0827cf6 100755
--- a/letsencrypt-auto-source/letsencrypt-auto
+++ b/letsencrypt-auto-source/letsencrypt-auto
@@ -19,7 +19,7 @@ XDG_DATA_HOME=${XDG_DATA_HOME:-~/.local/share}
 VENV_NAME="letsencrypt"
 VENV_PATH=${VENV_PATH:-"$XDG_DATA_HOME/$VENV_NAME"}
 VENV_BIN=${VENV_PATH}/bin
-LE_AUTO_VERSION="0.4.0"
+LE_AUTO_VERSION="0.5.0.dev0"
 
 # This script takes the same arguments as the main letsencrypt program, but it
 # additionally responds to --verbose (more output) and --debug (allow support
@@ -609,10 +609,6 @@ traceback2==1.4.0
 # sha256: IogqDkGMKE4fcYqCKzsCKUTVPS2QjhaQsxmp0-ssBXk
 unittest2==1.1.0
 
-# sha256: aUkbUwUVfDxuDwSnAZhNaud_1yn8HJrNJQd_HfOFMms
-# sha256: 619wCpv8lkILBVY1r5AC02YuQ9gMP_0x8iTCW8DV9GI
-Werkzeug==0.11.3
-
 # sha256: KCwRK1XdjjyGmjVx-GdnwVCrEoSprOK97CJsWSrK-Bo
 zope.component==4.2.2