diff --git a/bin/pyenv-virtualenv b/bin/pyenv-virtualenv
index b37f59d..8e75a0e 100755
--- a/bin/pyenv-virtualenv
+++ b/bin/pyenv-virtualenv
@@ -2,10 +2,12 @@
 #
 # Summary: Create a Python virtualenv using the pyenv-virtualenv plugin
 #
-# Usage: pyenv virtualenv [VIRTUALENV_OPTIONS] <version> <virtualenv-name>
+# Usage: pyenv virtualenv [-f|--force] [VIRTUALENV_OPTIONS] <version> <virtualenv-name>
 #        pyenv virtualenv --version
 #        pyenv virtualenv --help
 #
+#   -f/--force       Install even if the version appears to be installed already
+#
 
 PYENV_VIRTUALENV_VERSION="20130527"
 VIRTUALENV_VERSION="${VIRTUALENV_VERSION:-1.9.1}"
@@ -133,6 +135,7 @@ ensure_virtualenv "${VIRTUALENV}" "${VIRTUALENV_URL}" || {
   exit 1
 }
 
+unset FORCE
 # Unset environment variables which starts with `VIRTUALENV_`.
 # These variables are reserved for virtualenv.
 unset VIRTUALENV_VERSION
@@ -140,6 +143,9 @@ unset VIRTUALENV_VERSION
 parse_options "$@"
 for option in "${OPTIONS[@]}"; do
   case "$option" in
+  "f" | "force" )
+    FORCE=true
+    ;;
   "h" | "help" )
     usage 0
     ;;