diff --git a/Programming/anaconda/2019.07/conda-env-defs/datascience_py36/datascience_36.yml b/Programming/anaconda/2019.07/conda-env-defs/datascience_py36/datascience_36.yml
index 8f9f851..dcb07b9 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/datascience_py36/datascience_36.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/datascience_py36/datascience_36.yml
@@ -5,6 +5,7 @@ channels:
 dependencies:
   - python=3.6
   - pandas
+  - xlrd
   - numpy
   - scipy
   - scikit-learn
@@ -17,6 +18,8 @@ dependencies:
   - deap
   - nb_conda_kernels
   - ipywidgets
+  - plotly
+  - python-graphviz
 # Note that the dask 2.1.0 with python 3.6 led to a non-functioning configuration
 # (serialization errors in dask). Therefore we exclude it here.
 #  - dask
diff --git a/Programming/anaconda/2019.07/conda-env-defs/datascience_py37/datascience_py37.yml b/Programming/anaconda/2019.07/conda-env-defs/datascience_py37/datascience_py37.yml
index 7eeab07..0f63606 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/datascience_py37/datascience_py37.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/datascience_py37/datascience_py37.yml
@@ -5,6 +5,7 @@ channels:
 dependencies:
   - python=3.7
   - pandas
+  - xlrd
   - numpy
   - scipy
   - scikit-learn
@@ -18,5 +19,9 @@ dependencies:
   - deap
   - nb_conda_kernels
   - ipywidgets
+  - plotly
   - dask
   - dask-jobqueue
+  - python-graphviz
+  - bayesian-optimization
+  
diff --git a/Programming/anaconda/2019.07/conda-env-defs/hpce-tools/hpce-tools.yml b/Programming/anaconda/2019.07/conda-env-defs/hpce-tools/hpce-tools.yml
index 2aca8ee..19d540e 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/hpce-tools/hpce-tools.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/hpce-tools/hpce-tools.yml
@@ -6,4 +6,5 @@ channels:
 dependencies:
   - python=3.6
   - ldapuserdir
-  
+  - cython  # for pyslurm
+  - conda-build
diff --git a/Programming/anaconda/2019.07/conda-env-defs/jupyterhub-1.0.0_py36/jupyterhub_1.0.0_py36.yml b/Programming/anaconda/2019.07/conda-env-defs/jupyterhub-1.0.0_py36/jupyterhub_1.0.0_py36.yml
index a889e4e..a2a77c8 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/jupyterhub-1.0.0_py36/jupyterhub_1.0.0_py36.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/jupyterhub-1.0.0_py36/jupyterhub_1.0.0_py36.yml
@@ -9,3 +9,4 @@ dependencies:
   - jupyter_contrib_nbextensions
   - ipywidgets
   - pip
+  - jupytext
diff --git a/Programming/anaconda/2019.07/conda-env-defs/talos_py36/talos_py36.yml b/Programming/anaconda/2019.07/conda-env-defs/talos_py36/talos_py36.yml
index fffdff1..cc1464b 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/talos_py36/talos_py36.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/talos_py36/talos_py36.yml
@@ -4,6 +4,7 @@ channels:
 dependencies:
   - python=3.6
   - pandas
+  - xlrd
   - numpy
   - scipy
   - scikit-learn
diff --git a/Programming/anaconda/2019.07/conda-env-defs/tensorflow-1.13.1_py36/tensorflow-1.13.1_py36.yml b/Programming/anaconda/2019.07/conda-env-defs/tensorflow-1.13.1_py36/tensorflow-1.13.1_py36.yml
index 83bb851..28d9b37 100644
--- a/Programming/anaconda/2019.07/conda-env-defs/tensorflow-1.13.1_py36/tensorflow-1.13.1_py36.yml
+++ b/Programming/anaconda/2019.07/conda-env-defs/tensorflow-1.13.1_py36/tensorflow-1.13.1_py36.yml
@@ -5,6 +5,7 @@ channels:
 dependencies:
   - python=3.6
   - pandas
+  - xlrd
   - numpy
   - scipy
   - scikit-learn