diff --git a/pytorch-gpu/Dockerfile b/pytorch-gpu/Dockerfile
index 1dbe067d5c427696903495dc684b22be47057c12..f779210aec474ff6353f24f40eb1d170e8527d4b 100644
--- a/pytorch-gpu/Dockerfile
+++ b/pytorch-gpu/Dockerfile
@@ -33,7 +33,7 @@ RUN wget --no-hsts -q -O vscode_cli.tar.gz 'https://code.visualstudio.com/sha/do
 # install some packages
 # NOTE: without --no-update-deps somehow an undefined symbol error in /opt/conda/lib/python3.11/lib-dynload/_sqlite3.cpython-311-x86_64-linux-gnu.so occurs, which crashes jupyter lab.
 USER ${NB_UID}
-RUN mamba install --yes --no-update-deps \
+RUN conda install --yes --no-update-deps \
     # umap + hdbscan
     'umap-learn' \
     'hdbscan' \