diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 681ab0599..aa948496a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,8 +26,9 @@ jobs:
     strategy:
       matrix:
         os:
-        - ubuntu-latest
-        - macos-latest
+        # - ubuntu-latest
+        # - macos-latest
+        - windows-latest
         node:
         - 8
         - '*'
@@ -36,9 +37,14 @@ jobs:
         - test:command
         - test:fast
         exclude:
-        - os: macos-latest
+        # - os: macos-latest
+        #   node: '*'
+        # - os: macos-latest
+        #   node: 8
+        #   test-command: test:fast
+        - os: windows-latest
           node: '*'
-        - os: macos-latest
+        - os: windows-latest
           node: 8
           test-command: test:fast
 
@@ -55,7 +61,8 @@ jobs:
 
     - run: npm ci
     - run: npm run ${{ matrix.test-command }} -- --retries 1
-      timeout-minutes: 10
+      shell: cmd
+      timeout-minutes: 15
       env:
         NODE_LTS: ${{ matrix.node == 8 }}
         DEBUG: ember-cli-update,boilerplate-update,git-diff-apply,git-fixtures