diff --git a/Server/ws/export_test.go b/Server/ws/export_test.go
index 36b91f39..18e4cfdb 100644
--- a/Server/ws/export_test.go
+++ b/Server/ws/export_test.go
@@ -6,6 +6,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"net/http"
 	"os/exec"
 	"time"
 
@@ -193,6 +194,12 @@ func (p *LiveKitProcess) GenerateConfigForTest() (string, error) {
 	return p.generateConfig()
 }
 
+// HTTPTransportForTest exposes the health-check client's transport so tests can
+// assert it does not share http.DefaultTransport's connection pool.
+func (p *LiveKitProcess) HTTPTransportForTest() http.RoundTripper {
+	return p.httpClient.Transport
+}
+
 // SetProcessCmdForTest sets cmd to a non-nil value to simulate "already running".
 func (p *LiveKitProcess) SetProcessCmdForTest() {
 	p.mu.Lock()
diff --git a/Server/ws/livekit_process.go b/Server/ws/livekit_process.go
index e20bf86b..f5a513cf 100644
--- a/Server/ws/livekit_process.go
+++ b/Server/ws/livekit_process.go
@@ -45,6 +45,10 @@ func NewLiveKitProcess(cfg *config.VoiceConfig, tlsCfg *config.TLSConfig, dataDi
 		tlsCfg:  tlsCfg,
 		dataDir: dataDir,
 		httpClient: &http.Client{
+			// Own the transport rather than inheriting http.DefaultTransport:
+			// its pool is shared process-wide, and httptest.Server.Close closes
+			// its idle connections, which severs in-flight health checks.
+			Transport: http.DefaultTransport.(*http.Transport).Clone(),
 			CheckRedirect: func(*http.Request, []*http.Request) error {
 				return http.ErrUseLastResponse
 			},
diff --git a/Server/ws/livekit_test.go b/Server/ws/livekit_test.go
index aa392c01..067ebc8c 100644
--- a/Server/ws/livekit_test.go
+++ b/Server/ws/livekit_test.go
@@ -982,6 +982,26 @@ func TestHealthCheck_Success(t *testing.T) {
 	}
 }
 
+// httptest.Server.Close calls CloseIdleConnections on the process-wide
+// http.DefaultTransport, so a health-check client that falls back to it can have
+// a pooled connection severed mid-request by any unrelated parallel test closing
+// its own server ("http: CloseIdleConnections called"). The client must own its
+// transport — in production that also keeps the health check off the connection
+// pool every other DefaultTransport user in the process shares.
+func TestHealthCheckClientOwnsItsTransport(t *testing.T) {
+	t.Parallel()
+
+	proc := ws.NewLiveKitProcess(&config.VoiceConfig{}, &config.TLSConfig{}, t.TempDir())
+
+	tr := proc.HTTPTransportForTest()
+	if tr == nil {
+		t.Fatal("health-check client has no Transport, so it falls back to http.DefaultTransport")
+	}
+	if tr == http.DefaultTransport {
+		t.Error("health-check client shares http.DefaultTransport's connection pool")
+	}
+}
+
 func TestHealthCheck_ServerDown(t *testing.T) {
 	t.Parallel()