diff --git a/appveyor.yml b/appveyor.yml
index e3d8b83c..6cfe4883 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -38,16 +38,16 @@ install:
   - conda update -q conda
   - conda info -a
   - "python -m pip install --upgrade pip"
-  - conda install numpy==1.15
-  - conda install scipy
-  - conda install matplotlib
-  - conda install pandas
-  - conda config --add channels conda-forge
-  - conda install -c conda-forge lapack
-  - conda install -c cvxgrp cvxpy
-  - conda install coveralls
-  #- conda env create -f C:\\projects\pythonrobotics\environment.yml
-  #- activate python_robotics
+  #- conda install numpy==1.15
+  #- conda install scipy
+  #- conda install matplotlib
+  #- conda install pandas
+  #- conda config --add channels conda-forge
+  #- conda install -c conda-forge lapack
+  #- conda install -c cvxgrp cvxpy
+  #- conda install coveralls
+  - conda env create -f C:\\projects\pythonrobotics\environment.yml
+  - activate python_robotics
 
   # Check that we have the expected version and architecture for Python
   - "python --version"
diff --git a/environment.yml b/environment.yml
index 89e09cd1..34d7edee 100644
--- a/environment.yml
+++ b/environment.yml
@@ -5,4 +5,5 @@ dependencies:
 - scipy
 - numpy==1.15
 - pandas
-- cvxpy
+- pip:
+    - cvxpy
diff --git a/users_comments.md b/users_comments.md
index 96c8c56d..dc4b7d9c 100644
--- a/users_comments.md
+++ b/users_comments.md
@@ -152,6 +152,8 @@ Dear AtsushiSakai, <br>Hello! YOUR CODE IS SUPER SUPER HELPFUL AND GIVES ME CLEA
 
 ---
 
+Hi AtsushiSakai, <br> <br>Thanks for creating the pythonrobotics repo! It's an awesome repo that has been of great help to me. I've referenced your extended kalman filter algorithm while creating my own for localization using a 2D lidar, camera, and IMU. Our robot is destined to compete soon, so fingers crossed that all works out! Thanks again.
+
 
 =========