diff --git a/fuzz-until-converged.sh b/fuzz-until-converged.sh
index a6822eac..94b8fdc1 100755
--- a/fuzz-until-converged.sh
+++ b/fuzz-until-converged.sh
@@ -8,7 +8,7 @@ while [[ $iters_without_improvement -lt $MAX_ITERS_WITHOUT_IMPROVEMENT ]]; do
   cp -r "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_old"
   cargo fuzz run --all-features "fuzz_$1" "fuzz/corpus/fuzz_$1" -- \
     -dict=fuzz/fuzz.dict -max_len="$2" -fork="$ncpus" \
-    -max_total_time=900
+    -max_total_time=1800 -runs=20000000
   ./recursive-fuzz-cmin.sh "$1" "$2"
   if diff "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_old"; then
     iters_without_improvement=$(( iters_without_improvement + 1 ))