diff --git a/benches/bank.rs b/benches/bank.rs
index f68e45a80a..fc5279c1ac 100644
--- a/benches/bank.rs
+++ b/benches/bank.rs
@@ -58,5 +58,9 @@ fn bench(criterion: &mut Criterion) {
     });
 }
 
-criterion_group!(benches, bench);
+criterion_group!(
+    name = benches;
+    config = Criterion::default().sample_size(2);
+    targets = bench
+);
 criterion_main!(benches);
diff --git a/benches/ledger.rs b/benches/ledger.rs
index 34aa36f7c5..4d31bc31f3 100644
--- a/benches/ledger.rs
+++ b/benches/ledger.rs
@@ -32,5 +32,9 @@ fn bench(criterion: &mut Criterion) {
     });
 }
 
-criterion_group!(benches, bench);
+criterion_group!(
+    name = benches;
+    config = Criterion::default().sample_size(2);
+    targets = bench
+);
 criterion_main!(benches);
diff --git a/benches/signature.rs b/benches/signature.rs
index f559287b5f..c9370fa1c5 100644
--- a/benches/signature.rs
+++ b/benches/signature.rs
@@ -16,5 +16,9 @@ fn bench(criterion: &mut Criterion) {
     });
 }
 
-criterion_group!(benches, bench);
+criterion_group!(
+    name = benches;
+    config = Criterion::default().sample_size(2);
+    targets = bench
+);
 criterion_main!(benches);