diff --git a/.github/workflows/selftest.yml b/.github/workflows/selftest.yml
index 2908ed0..aa43acc 100644
--- a/.github/workflows/selftest.yml
+++ b/.github/workflows/selftest.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['ubuntu', 'macos'] # TODO: add windows
+        os: ['ubuntu', 'macos', 'windows']
 
     name: on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}-latest