diff --git a/.gitignore b/.gitignore
index 0251df0..af704f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 notebooks
 .*.sw*
+cuda.deb
diff --git a/Makefile b/Makefile
index 5cd969e..1a4d1d9 100644
--- a/Makefile
+++ b/Makefile
@@ -7,9 +7,12 @@ up: run
 run: build
 	docker compose up
 
-build: jupyter/Dockerfile
+build: jupyter/Dockerfile jupyter/cuda.deb
 	docker compose build
 
+jupyter/cuda.deb:
+	curl https://developer.download.nvidia.com/compute/cuda/12.0.0/local_installers/cuda-repo-debian11-12-0-local_12.0.0-525.60.13-1_amd64.deb -o cuda.deb
+
 down:
 	docker compose down
 
diff --git a/jupyter/Dockerfile b/jupyter/Dockerfile
index 8b494df..3be3bc1 100644
--- a/jupyter/Dockerfile
+++ b/jupyter/Dockerfile
@@ -5,23 +5,30 @@ RUN conda update -y -n base -c conda-forge conda
 
 RUN conda create -y --name jupyter python=3.10
 
-RUN CONDA_OVERRIDE_CUDA=11.8 \
+# CUDA toolkit 12.0 is not available in conda-forge, and my host OS has 12.0
+COPY cuda.deb /tmp
+RUN dpkg -i /tmp/cuda.deb && rm /tmp/cuda.deb
+
+RUN CONDA_OVERRIDE_CUDA=12.0 \
     conda install -n jupyter --quiet -y -c conda-forge \
          jupyterlab \
-         pandas \
-         librosa \
-         matplotlib \
-         pyarrow \
-         pillow \
          keras \
-         cudatoolkit=11.8 \
          cudnn \
          keras-tuner \
          numpy \
          h5py \
-         tensorflow=2.14 \
+         tensorflow=2.15 \
     && /bin/true  # only added to make the installed package lines consistent
 
+RUN conda install -n jupyter --quiet -y -c conda-forge \
+         pandas \
+         librosa \
+         matplotlib \
+         pyarrow \
+         pydot \
+         pillow \
+    && /bin/true # as above
+
 SHELL      ["conda",   "run",                        "-n", "jupyter", "/bin/bash",  "-c"]
 ENTRYPOINT ["conda",   "run", "--no-capture-output", "-n", "jupyter" ]
 CMD        ["jupyter", "lab", "--ip", "0.0.0.0", "--port", "9001", "--no-browser", "--allow-root", "--LabApp.token=''", "--notebook-dir=/notebooks", "--ResourceUseDisplay.track_cpu_percent=True" ]