diff --git a/README.md b/README.md
index 66bbe52..ef00f1d 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,9 @@ You can set certain environment variables to control the pyenv-virtualenv.
 * `VIRTUALENV_VERSION`, if set, forces pyenv-virtualenv to install desired
   version of virtualenv. If the virtualenv has not been installed,
   pyenv-virtualenv will try to install the given version of virtualenv.
-* `SETUPTOOLS_VERSION` and `PIP_VERSION`, if set and if pyvenv is preferred
+* `EZ_SETUP_URL` and `GET_PIP_URL`, if set and pyvenv is preferred
+  than virtualenv, download `ez_setup.py` and `get_pip.py` from specified URL.
+* `SETUPTOOLS_VERSION` and `PIP_VERSION`, if set and pyvenv is preferred
   than virtualenv, install specified version of setuptools and pip.
 
 
diff --git a/bin/pyenv-virtualenv b/bin/pyenv-virtualenv
index 3dd8699..c1f3d64 100755
--- a/bin/pyenv-virtualenv
+++ b/bin/pyenv-virtualenv
@@ -293,12 +293,14 @@ if [ ! -e "${VIRTUALENV_PATH}/bin/python" ]; then
 fi
 
 if virtualenv_is_pyvenv; then
+  [ -n "${EZ_SETUP_URL}" ] || EZ_SETUP_URL="https://bitbucket.org/pypa/setuptools/raw/${SETUPTOOLS_VERSION:-0.7.4}/ez_setup.py"
   PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-exec python -c 'import setuptools' 1>/dev/null 2>&1 || {
-    http get "https://bitbucket.org/pypa/setuptools/raw/${SETUPTOOLS_VERSION:-0.7.4}/ez_setup.py" | PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-exec python
+    http get "${EZ_SETUP_URL}" | PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-exec python
   }
 
+  [ -n "${GET_PIP_URL}" ] || GET_PIP_URL="https://raw.github.com/pypa/pip/${PIP_VERSION:-master}/contrib/get-pip.py"
   PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-which pip 1>/dev/null 2>&1 || {
-    http get "https://raw.github.com/pypa/pip/${PIP_VERSION:-master}/contrib/get-pip.py" | PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-exec python
+    http get "${GET_PIP_URL}" | PYENV_VERSION="${VIRTUALENV_NAME}" pyenv-exec python
   }
 fi