diff --git a/examples/pybullet/gym/pybullet_robots/laikago/__init__.py b/examples/pybullet/gym/pybullet_robots/laikago/__init__.py
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_robots/laikago/__init__.py
@@ -0,0 +1 @@
+
diff --git a/examples/pybullet/gym/pybullet_robots/xarm/__init__.py b/examples/pybullet/gym/pybullet_robots/xarm/__init__.py
new file mode 100644
index 000000000..8b1378917
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_robots/xarm/__init__.py
@@ -0,0 +1 @@
+