1 files changed, 1 insertions, 0 deletions

diff --git a/subprojects/language-web/src/test/java/tools/refinery/language/web/ProblemWebSocketServletIntegrationTest.java b/subprojects/language-web/src/test/java/tools/refinery/language/web/ProblemWebSocketServletIntegrationTest.java
index 6dfce780..24fab4e3 100644
--- a/subprojects/language-web/src/test/java/tools/refinery/language/web/ProblemWebSocketServletIntegrationTest.java
+++ b/subprojects/language-web/src/test/java/tools/refinery/language/web/ProblemWebSocketServletIntegrationTest.java
@@ -177,6 +177,7 @@ class ProblemWebSocketServletIntegrationTest {
 
         private void startServer(String allowedOrigins) {
                 server = new Server(new InetSocketAddress(SERVER_PORT));
+                ServerLauncher.enableVirtualThreads(server);
                 var handler = new ServletContextHandler();
                 var holder = new ServletHolder(ProblemWebSocketServlet.class);
                 if (allowedOrigins != null) {