diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 485b201..57788c6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,14 +4,21 @@ on:
   push:
     branches: [main]
   pull_request:
+  workflow_dispatch:
 
 permissions:
   contents: read
 
 jobs:
   verify:
-    name: Verify and package
-    runs-on: ubuntu-latest
+    name: Verify and package (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      # Report Linux and Windows results independently instead of cancelling
+      # the matrix on the first failure.
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
     steps:
       - name: Checkout
         uses: actions/checkout@v5