diff --git a/benches/5.generator b/benches/5.generator
new file mode 100644
index 000000000..cdb621e24
Binary files /dev/null and b/benches/5.generator differ
diff --git a/benches/intern.rs b/benches/intern.rs
index cd4925882..9a1a3ceb5 100644
--- a/benches/intern.rs
+++ b/benches/intern.rs
@@ -10,6 +10,7 @@ fn intern_benchmark(c: &mut Criterion) {
     let block2: &[u8] = include_bytes!("2.generator");
     let block3: &[u8] = include_bytes!("3.generator");
     let block4: &[u8] = include_bytes!("4.generator");
+    let block5: &[u8] = include_bytes!("5.generator");
 
     let mut group = c.benchmark_group("intern");
 
@@ -19,6 +20,7 @@ fn intern_benchmark(c: &mut Criterion) {
         (&block2, "2"),
         (&block3, "3"),
         (&block4, "4"),
+        (&block5, "5"),
     ] {
         let mut a = Allocator::new();
         let node = node_from_bytes_backrefs(&mut a, block).expect("node_from_bytes_backrefs");
diff --git a/benches/serialize.rs b/benches/serialize.rs
index 6e017b400..6b56847cd 100644
--- a/benches/serialize.rs
+++ b/benches/serialize.rs
@@ -18,6 +18,7 @@ fn serialize_benchmark(c: &mut Criterion) {
     let block2: &[u8] = include_bytes!("2.generator");
     let block3: &[u8] = include_bytes!("3.generator");
     let block4: &[u8] = include_bytes!("4.generator");
+    let block5: &[u8] = include_bytes!("5.generator");
 
     let mut group = c.benchmark_group("serialize");
 
@@ -27,6 +28,7 @@ fn serialize_benchmark(c: &mut Criterion) {
         (&block2, "2"),
         (&block3, "3"),
         (&block4, "4"),
+        (&block5, "5"),
     ] {
         let mut a = Allocator::new();
         let node = node_from_bytes_backrefs(&mut a, block).expect("node_from_bytes_backrefs");