diff --git a/kifmm/benches/laplace_f32_amd.rs b/kifmm/benches/laplace_f32_amd.rs
index 3409e18a..d7ee8c46 100644
--- a/kifmm/benches/laplace_f32_amd.rs
+++ b/kifmm/benches/laplace_f32_amd.rs
@@ -11,6 +11,10 @@ use kifmm::traits::tree::{SingleFmmTree, SingleTree};
 use kifmm::tree::helpers::{points_fixture, points_fixture_oblate_spheroid, points_fixture_sphere};
 use rlst::{rlst_dynamic_array2, RawAccess, RawAccessMut};
 
+fn configure_criterion() -> Criterion {
+    Criterion::default().sample_size(10) // Set global sample size to 10
+}
+
 fn fft_f32(c: &mut Criterion) {
     let mut group = c.benchmark_group("F32 Potentials FFT-M2L");
 
@@ -230,5 +234,11 @@ fn blas_f32(c: &mut Criterion) {
     }
 }
 
-criterion_group!(laplace_p_f32, fft_f32, blas_f32);
-criterion_main!(laplace_p_f32);
+
+criterion_group! {
+    name = laplace_p_f32;
+    config = configure_criterion();
+    targets = fft_f32, blas_f32
+}
+
+criterion_main!(laplace_p_f32);
\ No newline at end of file
diff --git a/kifmm/benches/laplace_f32_m1.rs b/kifmm/benches/laplace_f32_m1.rs
index b362d1e5..a0863a4d 100644
--- a/kifmm/benches/laplace_f32_m1.rs
+++ b/kifmm/benches/laplace_f32_m1.rs
@@ -11,6 +11,10 @@ use kifmm::traits::tree::{SingleFmmTree, SingleTree};
 use kifmm::tree::helpers::{points_fixture, points_fixture_oblate_spheroid, points_fixture_sphere};
 use rlst::{rlst_dynamic_array2, RawAccess, RawAccessMut};
 
+fn configure_criterion() -> Criterion {
+    Criterion::default().sample_size(10) // Set global sample size to 10
+}
+
 fn fft_f32(c: &mut Criterion) {
     let mut group = c.benchmark_group("F32 Potentials FFT-M2L");
 
@@ -226,5 +230,11 @@ fn blas_f32(c: &mut Criterion) {
     }
 }
 
-criterion_group!(laplace_p_f32, fft_f32, blas_f32);
+
+criterion_group! {
+    name = laplace_p_f32;
+    config = configure_criterion();
+    targets = fft_f32, blas_f32
+}
+
 criterion_main!(laplace_p_f32);
diff --git a/kifmm/benches/laplace_f64_amd.rs b/kifmm/benches/laplace_f64_amd.rs
index 7a10a8f6..e4ff7e4d 100644
--- a/kifmm/benches/laplace_f64_amd.rs
+++ b/kifmm/benches/laplace_f64_amd.rs
@@ -11,6 +11,10 @@ use kifmm::traits::tree::{SingleFmmTree, SingleTree};
 use kifmm::tree::helpers::{points_fixture, points_fixture_oblate_spheroid, points_fixture_sphere};
 use rlst::{rlst_dynamic_array2, RawAccess, RawAccessMut};
 
+fn configure_criterion() -> Criterion {
+    Criterion::default().sample_size(10) // Set global sample size to 10
+}
+
 fn fft_f64(c: &mut Criterion) {
     let mut group = c.benchmark_group("F64 Potentials FFT-M2L");
 
@@ -238,5 +242,10 @@ fn blas_f64(c: &mut Criterion) {
     }
 }
 
-criterion_group!(laplace_p_f64, fft_f64, blas_f64);
+criterion_group! {
+    name = laplace_p_f64;
+    config = configure_criterion();
+    targets = fft_f64, blas_f64
+}
+
 criterion_main!(laplace_p_f64);
diff --git a/kifmm/benches/laplace_f64_m1.rs b/kifmm/benches/laplace_f64_m1.rs
index 9c4b5edf..5ff5abc6 100644
--- a/kifmm/benches/laplace_f64_m1.rs
+++ b/kifmm/benches/laplace_f64_m1.rs
@@ -10,6 +10,11 @@ use kifmm::traits::tree::{SingleFmmTree, SingleTree};
 use kifmm::tree::helpers::{points_fixture, points_fixture_oblate_spheroid, points_fixture_sphere};
 use rlst::RawAccess;
 
+
+fn configure_criterion() -> Criterion {
+    Criterion::default().sample_size(10) // Set global sample size to 10
+}
+
 fn fft_f64(c: &mut Criterion) {
     let mut group = c.benchmark_group("F64 Potentials FFT-M2L");
 
@@ -237,5 +242,10 @@ fn blas_f64(c: &mut Criterion) {
     }
 }
 
-criterion_group!(laplace_p_f64, fft_f64, blas_f64);
+criterion_group! {
+    name = laplace_p_f64;
+    config = configure_criterion();
+    targets = fft_f64, blas_f64
+}
+
 criterion_main!(laplace_p_f64);