diff --git a/.github/workflows/Python_tests.yml b/.github/workflows/Python_tests.yml
index f830c059..a1dbd98a 100644
--- a/.github/workflows/Python_tests.yml
+++ b/.github/workflows/Python_tests.yml
@@ -1,4 +1,3 @@
-# TODO: Enable os: windows-latest
 # TODO: Enable python-version: 3.5
 # TODO: Enable pytest --doctest-modules
 
@@ -11,7 +10,7 @@ jobs:
       fail-fast: false
       max-parallel: 15
       matrix:
-        os: [macos-latest, ubuntu-latest] # , windows-latest]
+        os: [macos-latest, ubuntu-latest, windows-latest]
         python-version: [2.7, 3.6, 3.7, 3.8] # 3.5,
     steps:
       - uses: actions/checkout@v1