diff --git a/.travis.yml b/.travis.yml
index 8292c3d..1bc59c1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,21 @@ matrix:
     - python: 3.7
       dist: xenial
       sudo: true
+    # ======= OSX ========
+    - name: "Python 2.7.14 on macOS 10.13"
+      os: osx
+      osx_image: xcode9.3  # Python 2.7.14_2 running on macOS 10.13
+      language: shell       # 'language: python' is an error on Travis CI macOS
+      # sudo: true
+      before_install:
+        - python --version
+        # - pip install -U pip
+        - python -m pip install --upgrade pip
+        - pip install pytest
+        - pip install codecov
+        - pip install pymongo
+      script: python -m pytest
+      after_success: python  -m codecov
     - name: "Python 3.6.5 on macOS 10.13"
       os: osx
       osx_image: xcode9.4  # Python 3.6.5 running on macOS 10.13
@@ -36,29 +51,7 @@ matrix:
         - pip3 install pymongo
       script: python3 -m pytest
       after_success: python 3 -m codecov
-    - name: "Python 2.7.14 on macOS 10.13"
-      os: osx
-      osx_image: xcode9.3  # Python 2.7.14_2 running on macOS 10.13
-      language: shell       # 'language: python' is an error on Travis CI macOS
-      # sudo: true
-      before_install:
-        - python --version
-        # - pip install -U pip
-        - pip install -U pytest
-        - pip install codecov
-        - pip install pymongo
-      script: python -m pytest
-      after_success: python  -m codecov
-    - name: "Python 3.7 on Windows"
-      os: windows           # Windows 10.0.17134 N/A Build 17134
-      language: shell       # 'language: python' is an error on Travis CI Windows
-      before_install:
-        - choco install python
-        - python --version
-        - python -m pip install --upgrade pip
-        - pip3 install --upgrade pytest
-        - pip3 install codecov
-      env: PATH=/c/Python37:/c/Python37/Scripts:$PATH
+    #  ====== WINDOWS =========
     - name: "Python 2.7 on Windows"
       os: windows           # Windows 10.0.17134 N/A Build 17134
       language: shell       # 'language: python' is an error on Travis CI Windows
@@ -69,6 +62,26 @@ matrix:
         - pip install --upgrade pytest
         - pip install codecov
       env: PATH=/c/Python27:/c/Python27/Scripts:$PATH
+    - name: "Python 3.6 on Windows"
+      os: windows           # Windows 10.0.17134 N/A Build 17134
+      language: shell       # 'language: python' is an error on Travis CI Windows
+      before_install:
+        - choco install python --version 3.6.7
+        - python --version
+        - python -m pip install --upgrade pip
+        - pip3 install --upgrade pytest
+        - pip3 install codecov
+      env: PATH=/c/Python36:/c/Python36/Scripts:$PATH
+    - name: "Python 3.7 on Windows"
+      os: windows           # Windows 10.0.17134 N/A Build 17134
+      language: shell       # 'language: python' is an error on Travis CI Windows
+      before_install:
+        - choco install python
+        - python --version
+        - python -m pip install --upgrade pip
+        - pip3 install --upgrade pytest
+        - pip3 install codecov
+      env: PATH=/c/Python37:/c/Python37/Scripts:$PATH
 before_install:
   # coverage submission packages
   - python --version