diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
index b9f1b488e09..bbad6ea7710 100644
--- a/test/functional/test_framework/util.py
+++ b/test/functional/test_framework/util.py
@@ -538,6 +538,7 @@ def write_config(config_path, *, n, chain, extra_config="", disable_autoconnect=
         # Disable server-side timeouts to avoid intermittent issues
         f.write("rpcservertimeout=99000\n")
         f.write("rpcdoccheck=1\n")
+        f.write("rpcthreads=2\n")
         f.write("fallbackfee=0.0002\n")
         f.write("server=1\n")
         f.write("keypool=1\n")