diff --git a/appveyor.yml b/appveyor.yml
index e0272dea..6e006acd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,7 +4,7 @@ environment:
   matrix:
     # For Python versions available on Appveyor, see
     # https://www.appveyor.com/docs/windows-images-software/#python
-    - PYTHON: "C:\\Python27"
+    - PYTHON: "C:\\Python36"
 
 install:
   # We need wheel installed to build wheels
@@ -15,21 +15,17 @@ install:
   #- "activate test-environment"
   #- "conda install pycurl"
   - "%PYTHON%\\python.exe -m pip install wheel"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/numpy-1.13.1+mkl-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install numpy-1.13.1+mkl-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/scipy-0.19.1-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install scipy-0.19.1-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/scikit_image-0.13.0-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install scikit_image-0.13.0-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/GDAL-2.1.3-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install GDAL-2.1.3-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/Shapely-1.5.17-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install Shapely-1.5.17-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-binaries/raw/master/pyproj-1.9.5.1-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install pyproj-1.9.5.1-cp27-cp27m-win32.whl"
-  - "appveyor DownloadFile https://download.lfd.uci.edu/pythonlibs/t7epjj8p/pycurl-7.43.0.3-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install pycurl-7.43.0.3-cp27-cp27m-win32.whl"
-  - "%PYTHON%\\python.exe -m pip install matplotlib pytest"
+  - "appveyor DownloadFile https://download.lfd.uci.edu/pythonlibs/q4hpdf1k/numpy-1.18.1+mkl-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install numpy-1.18.1+mkl-cp36-cp36m-win32.whl"
+  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/pycurl-7.43.0.4-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install pycurl-7.43.0.4-cp36-cp36m-win32.whl"
+  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/Shapely-1.6.4.post2-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install Shapely-1.6.4.post2-cp36-cp36m-win32.whl"
+  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/scikit_image-0.16.2-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install scikit_image-0.16.2-cp36-cp36m-win32.whl"
+  - "appveyor DownloadFile https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/scipy-1.4.1-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install scipy-1.4.1-cp36-cp36m-win32.whl"
+  - "%PYTHON%\\python.exe -m pip install matplotlib pytest vcrpy mock moto"
   - "%PYTHON%\\python.exe -m pip install -r requirements.txt"
 
 build: off
diff --git a/install_windows.md b/install_windows.md
index 496ca3d1..96ec6051 100644
--- a/install_windows.md
+++ b/install_windows.md
@@ -3,39 +3,41 @@ Install Python
 --------------
 
 Open up a web browser and paste in this URL to download python:  
-```https://www.python.org/ftp/python/2.7.13/python-2.7.13.msi```
+```https://www.python.org/ftp/python/3.7.5/python-3.7.5-amd64.exe```
 
 Open up the download and make sure you check the box "add python.exe to path".
 
 Install Other Dependencies
 --------------
 
-Install gdal:
+Install numpy:
 
-Open windows powershell (not the cmd utility):
+```
+pip install https://download.lfd.uci.edu/pythonlibs/q4hpdf1k/numpy-1.18.1+mkl-cp37-cp37m-win_amd64.whl
+```
+
+Install pycurl:
 
 ```
-curl -outf GDAL-2.1.3-cp27-cp27m-win32.whl https://github.com/DigitalGlobe/gbdxtools-windows-binaries/blob/master/GDAL-2.1.3-cp27-cp27m-win32.whl?raw=true
-pip install .\GDAL-2.1.3-cp27-cp27m-win32.whl
+pip install https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/pycurl-7.43.0.4-cp37-cp37m-win_amd64.whl
 ```
 
 Install Shapely:
 
 ```
-curl -outf Shapely-1.5.17-cp27-cp27m-win32.whl https://github.com/DigitalGlobe/gbdxtools-windows-binaries/blob/master/Shapely-1.5.17-cp27-cp27m-win32.whl?raw=true
-pip install .\Shapely-1.5.17-cp27-cp27m-win32.whl
+pip install https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/Shapely-1.6.4.post2-cp37-cp37m-win_amd64.whl
 ```
 
-Install pyproj:
+Install scikit_image:
 
 ```
-curl -outf pyproj-1.9.5.1-cp27-cp27m-win32.whl https://github.com/DigitalGlobe/gbdxtools-windows-binaries/blob/master/pyproj-1.9.5.1-cp27-cp27m-win32.whl?raw=true
-pip install .\pyproj-1.9.5.1-cp27-cp27m-win32.whl
+pip install https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/scikit_image-0.16.2-cp37-cp37m-win_amd64.whl
 ```
 
-Install matplotlib:
+Install scipy:
+
 ```
-pip install matplotlib
+pip install https://github.com/DigitalGlobe/gbdxtools-windows-dependencies/raw/master/scipy-1.4.1-cp37-cp37m-win_amd64.whl
 ```
 
 Install gbdxtools