diff --git a/simgear/io/test_repository.cxx b/simgear/io/test_repository.cxx
index da47d005..f7d5cac4 100644
--- a/simgear/io/test_repository.cxx
+++ b/simgear/io/test_repository.cxx
@@ -380,7 +380,7 @@ TestServer<TestRepositoryChannel> testServer;
 void waitForUpdateComplete(HTTP::Client* cl, HTTPRepository* repo)
 {
     SGTimeStamp start(SGTimeStamp::now());
-    while (start.elapsedMSec() <  10000) {
+    while (start.elapsedMSec() <  20000) {
         cl->update();
         testServer.poll();