diff --git a/.github/unittest/linux_olddeps/scripts_gym_0_13/environment.yml b/.github/unittest/linux_olddeps/scripts_gym_0_13/environment.yml
index d55b2091483..417b184fb79 100644
--- a/.github/unittest/linux_olddeps/scripts_gym_0_13/environment.yml
+++ b/.github/unittest/linux_olddeps/scripts_gym_0_13/environment.yml
@@ -21,8 +21,7 @@ dependencies:
     - pyyaml
     - scipy
     - hydra-core
-    - dm_control -e git+https://github.com/deepmind/dm_control.git@c053360edea6170acfd9c8f65446703307d9d352#egg={dm_control}
-    - mujoco
+    - dm_control -e git+https://github.com/deepmind/dm_control.git@c053360edea6170acfd9c8f65446703307d9d352#egg=dm_control
     - patchelf
     - pyopengl==3.1.4
     - ray