diff --git a/integration_tests/integration_dotnet_test.go b/integration_tests/integration_dotnet_test.go
index 98e4ad81..fa879f79 100644
--- a/integration_tests/integration_dotnet_test.go
+++ b/integration_tests/integration_dotnet_test.go
@@ -21,6 +21,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
@@ -627,6 +628,11 @@ func readUpdateEventLog(logfile string) ([]apitype.EngineEvent, error) {
 func TestDebuggerAttachDotnet(t *testing.T) {
 	t.Parallel()
 
+	// TODO[pulumi/pulumi-dotnet#403]: Fix flaky test.
+	if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
+		t.Skip("Temporarily skipping flaky test on macOS and Windows - pulumi/pulumi-dotnet#403")
+	}
+
 	languagePluginPath, err := filepath.Abs("../pulumi-language-dotnet")
 	require.NoError(t, err)