diff --git a/stackrc b/stackrc
index 170d3b6..c8e6c67 100644
--- a/stackrc
+++ b/stackrc
@@ -149,6 +149,13 @@
 _DEFAULT_PYTHON2_VERSION="$(_get_python_version python2)"
 export PYTHON2_VERSION=${PYTHON2_VERSION:-${_DEFAULT_PYTHON2_VERSION:-2.7}}
 
+# Create a virtualenv with this
+if [[ ${USE_PYTHON3} == True ]]; then
+    export VIRTUALENV_CMD="python3 -m venv"
+else
+    export VIRTUALENV_CMD="virtualenv "
+fi
+
 # allow local overrides of env variables, including repo config
 if [[ -f $RC_DIR/localrc ]]; then
     # Old-style user-supplied config