diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 712196a..89ed8b5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         go-version: [1.21.x]
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Install Go
@@ -20,4 +20,5 @@ jobs:
       run: go test -v -race ./...
     - name: Format
       if: matrix.go-version == '1.21.x'
+      shell: bash
       run: diff -u <(echo -n) <(gofmt -d .)
diff --git a/cmp/compare_test.go b/cmp/compare_test.go
index 88b7d45..360d9a7 100644
--- a/cmp/compare_test.go
+++ b/cmp/compare_test.go
@@ -62,7 +62,8 @@ func mustParseGolden(path string) map[string]string {
 	if err != nil {
 		panic(err)
 	}
-	s := string(b)
+	// Normalize CRLF to LF to support Windows.
+	s := strings.ReplaceAll(string(b), "\r\n", "\n")
 
 	out := map[string]string{}
 	for len(s) > 0 {