diff --git a/scripts/grade-hw1.sh b/scripts/grade-hw1.sh
index 13d510d..148881f 100755
--- a/scripts/grade-hw1.sh
+++ b/scripts/grade-hw1.sh
@@ -9,4 +9,4 @@ cargo clippy
 
 # Run tests.
 RUST_MIN_STACK=33554432 cargo test --release test_examples_write_c
-RUST_MIN_STACK=33554432 python3 tests/fuzz.py --print -n30
+RUST_MIN_STACK=33554432 python3 tests/fuzz.py --print -n80 --seed 22
diff --git a/scripts/grade-hw2.sh b/scripts/grade-hw2.sh
index 420f08c..39b7032 100755
--- a/scripts/grade-hw2.sh
+++ b/scripts/grade-hw2.sh
@@ -9,4 +9,4 @@ cargo clippy
 
 # Run tests.
 RUST_MIN_STACK=33554432 cargo test --release test_examples_irgen
-RUST_MIN_STACK=33554432 python3 tests/fuzz.py --irgen -n30
+RUST_MIN_STACK=33554432 python3 tests/fuzz.py --irgen -n80 --seed 22