diff --git a/chrony.spec b/chrony.spec
index 5b83fe8..f64e626 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -298,6 +298,7 @@ find %{buildroot} -type f | xargs sed -i '
 # Set random seed to get deterministic results
 export CLKNETSIM_RANDOM_SEED=24501
 export CFLAGS="%{optflags}"
+export CLKNETSIM_CONNECT_TIMEOUT=100
 make %{?_smp_mflags} -C test/simulation/clknetsim
 pushd test/simulation
 ./124-tai ||: