diff --git a/README b/README
index c01017bae0d8fe8ff069b2e70914e00c6d7ec0c4..bb23a7901faa0818d7d858083bb89db999b9106e 100644
--- a/README
+++ b/README
@@ -46,7 +46,7 @@ AUTHOR
 
 VERSION
 
-    0.7.3
+    0.7.4
 
 LAST UPDATED
 
diff --git a/definition-files/comet/jupyter/jupyter-cpu.def b/definition-files/comet/jupyter/jupyter-cpu.def
index defb6dd5afb8118f937645a4e340e0995524835a..1dc79a31a556c16a9a11fa7e0138985dffc2735f 100644
--- a/definition-files/comet/jupyter/jupyter-cpu.def
+++ b/definition-files/comet/jupyter/jupyter-cpu.def
@@ -6,18 +6,18 @@ OSVersion: xenial
 
     APPLICATION_NAME jupyter
     APPLICATION_VERSION 4.4.0
-    APPLICATION_URL https://www.ubuntu.com/
+    APPLICATION_URL https://jupyter.org/index.html
 
     SYSTEM_NAME comet
-    SYSTEM_SINGULARITY_VERSION 2.5.2
+    SYSTEM_SINGULARITY_VERSION 2.6.1
     SYSTEM_URL http://www.sdsc.edu/support/user_guides/comet.html
 
-    SINGULARITY_IMAGE_SIZE 4096
+    SINGULARITY_IMAGE_SIZE 16384
 
     AUTHOR_NAME Marty Kandes
     AUTHOR_EMAIL mkandes@sdsc.edu
 
-    LAST_UPDATED 20190118
+    LAST_UPDATED 20190516
 
 %setup
 
@@ -25,7 +25,7 @@ OSVersion: xenial
 
     # Set system locale
     export LC_ALL=C
-    export PATH="/opt/miniconda3/bin:${PATH}"
+    export PATH="/opt/anaconda3/bin:${PATH}"
 
 %post -c /bin/bash
 
@@ -80,52 +80,23 @@ OSVersion: xenial
     # bootstraping process
     cd /tmp
 
-    # Install miniconda2
-    wget https://repo.continuum.io/miniconda/Miniconda2-latest-Linux-x86_64.sh
-    chmod +x Miniconda2-latest-Linux-x86_64.sh
-    ./Miniconda2-latest-Linux-x86_64.sh -b -p /opt/miniconda2
-
-    # Install miniconda3
-    wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
-    chmod +x Miniconda3-latest-Linux-x86_64.sh
-    ./Miniconda3-latest-Linux-x86_64.sh -b -p /opt/miniconda3
-
-    # Install common python(2) packages for data science and machine
-    # learning applications
-    export PATH="/opt/miniconda2/bin:${PATH}"
-    conda install -y numpy
-    conda install -y mkl
-    conda install -y mkl-include
-    conda install -y pandas
-    conda install -y matplotlib
-    conda install -y ipython
-    conda install -y ipython-notebook
-    conda install -y jupyter
-    conda install -y sympy
-    conda install -y nose
-    conda install -y scikit-learn
-    conda install -y scikit-image
-    conda install -y nltk
-    conda install -y statsmodels
-    conda install -y opencv
-
-    # Install common python3 packages for data science and machine
-    # learning applications
-    export PATH="/opt/miniconda3/bin:${PATH}"
-    conda install -y numpy
-    conda install -y mkl
-    conda install -y mkl-include
-    conda install -y pandas
-    conda install -y matplotlib
-    conda install -y ipython
-    conda install -y jupyter
-    conda install -y sympy
-    conda install -y nose
-    conda install -y scikit-learn
-    conda install -y scikit-image
-    conda install -y nltk
-    conda install -y statsmodels
-    conda install -y opencv
+    # Install Anaconda2
+    wget https://repo.anaconda.com/archive/Anaconda2-2019.03-Linux-x86_64.sh
+    chmod +x Anaconda2-2019.03-Linux-x86_64.sh
+    ./Anaconda2-2019.03-Linux-x86_64.sh -b -p /opt/anaconda2
+
+    # Install Anaconda3
+    wget https://repo.anaconda.com/archive/Anaconda3-2019.03-Linux-x86_64.sh
+    chmod +x Anaconda3-2019.03-Linux-x86_64.sh
+    ./Anaconda3-2019.03-Linux-x86_64.sh -b -p /opt/anaconda3
+
+    # Install additional python(2) packages with Anaconda2
+    export PATH="/opt/anaconda2/bin:${PATH}"
+    conda install -y jupyterhub
+
+    # Install additional python3 packages with Anaconda3
+    export PATH="/opt/anaconda3/bin:${PATH}"
+    conda install -y jupyterhub
     
     # Update database for mlocate
     updatedb