diff --git a/fast_histogram/histogram.py b/fast_histogram/histogram.py
index d8a27f7..4a23801 100644
--- a/fast_histogram/histogram.py
+++ b/fast_histogram/histogram.py
@@ -1,5 +1,6 @@
 import numbers
 
+import time
 import numpy as np
 
 from ._histogram_core import (
@@ -37,6 +38,8 @@ def histogram1d(x, bins, range, weights=None):
         The 1D histogram array
     """
 
+    time.sleep(0.1)
+
     nx = bins
 
     if not np.isscalar(bins):