diff --git a/Cargo.toml b/Cargo.toml
index 107537a5..736b0c94 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ name = "benchmarks"
 harness = false
 
 [dev-dependencies]
-criterion = "0.2"
+criterion = "0.3"
 rand = "0.6.1"
 doc-comment = "0.3"
 
diff --git a/benches/benchmarks.rs b/benches/benchmarks.rs
index e6ae3d20..475dfdb7 100644
--- a/benches/benchmarks.rs
+++ b/benches/benchmarks.rs
@@ -124,7 +124,7 @@ fn encode_benchmarks(byte_sizes: &[usize]) -> ParameterizedBenchmark<usize> {
     ParameterizedBenchmark::new("encode", do_encode_bench, byte_sizes.iter().cloned())
         .warm_up_time(std::time::Duration::from_millis(500))
         .measurement_time(std::time::Duration::from_secs(3))
-        .throughput(|s| Throughput::Bytes(*s as u32))
+        .throughput(|s| Throughput::Bytes(*s as u64))
         .with_function("encode_display", do_encode_bench_display)
         .with_function("encode_reuse_buf", do_encode_bench_reuse_buf)
         .with_function("encode_slice", do_encode_bench_slice)
@@ -135,7 +135,7 @@ fn decode_benchmarks(byte_sizes: &[usize]) -> ParameterizedBenchmark<usize> {
     ParameterizedBenchmark::new("decode", do_decode_bench, byte_sizes.iter().cloned())
         .warm_up_time(std::time::Duration::from_millis(500))
         .measurement_time(std::time::Duration::from_secs(3))
-        .throughput(|s| Throughput::Bytes(*s as u32))
+        .throughput(|s| Throughput::Bytes(*s as u64))
         .with_function("decode_reuse_buf", do_decode_bench_reuse_buf)
         .with_function("decode_slice", do_decode_bench_slice)
 }