diff --git a/vre-singleuser-interTwin_dev/Dockerfile b/vre-singleuser-interTwin_dev/Dockerfile
index 37cf337..6760422 100644
--- a/vre-singleuser-interTwin_dev/Dockerfile
+++ b/vre-singleuser-interTwin_dev/Dockerfile
@@ -10,7 +10,7 @@ RUN pip install --upgrade pip
 USER $NB_UID
 
 RUN conda install -y -n base mamba \
-    && mamba install -y -c conda-forge python-gfal2 asyncssh 'jupyterhub=1.5.1'\
+    && mamba install -y -c conda-forge python-gfal2 asyncssh jupyterhub==1.5.0 \
     && conda clean --all -f -y
 
 # Install rucio-jupyterlab with jlab v=3