diff --git a/.github/container/Dockerfile.mjx b/.github/container/Dockerfile.mjx
index 85e9e4aef..a836134f5 100644
--- a/.github/container/Dockerfile.mjx
+++ b/.github/container/Dockerfile.mjx
@@ -18,12 +18,11 @@ echo "mujoco:
 get-source.sh -l mujoco -m ${MANIFEST_FILE} 
 pip install ${SRC_PATH_MJX} -f https://py.mujoco.org/
 echo "-e file://${SRC_PATH_MJX}" >> /opt/pip-tools.d/requirements-mjx.in
-cat "mujoco" >> /opt/pip-tools.d/requirements-mjx.in
-cat "mujoco-mjx" >> /opt/pip-tools.d/requirements-mjx.in
+echo "mujoco" >> /opt/pip-tools.d/requirements-mjx.in
+echo "mujoco-mjx" >> /opt/pip-tools.d/requirements-mjx.in
 EOF
 
 
-
 ###############################################################################
 ## Install accumulated packages from the base image and the previous stage
 ###############################################################################