diff --git a/etc/pyenv.d/which/python-config.bash b/etc/pyenv.d/which/python-config.bash
new file mode 100644
index 0000000..41d54f6
--- /dev/null
+++ b/etc/pyenv.d/which/python-config.bash
@@ -0,0 +1,14 @@
+# some of libraries require `python-config` in PATH to build native extensions.
+# as a workaround, this hook will try to find the executable from the source
+# version of the virtualenv.
+# https://github.com/yyuu/pyenv/issues/397
+
+if [ ! -x "${PYENV_COMMAND_PATH}" ] && [[ "python"*"-config" == "${PYENV_COMMAND_PATH##*/}" ]]; then
+  virtualenv_prefix="$(pyenv-virtualenv-prefix 2>/dev/null || true)"
+  if [ -d "${virtualenv_prefix}" ]; then
+    virtualenv_command_path="${virtualenv_prefix}/bin/${PYENV_COMMAND_PATH##*/}"
+    if [ -x "${virtualenv_command_path}" ]; then
+      PYENV_COMMAND_PATH="${virtualenv_command_path}"
+    fi
+  fi
+fi