diff --git a/1-autocorrelation-time-bars/requirements.txt b/1-autocorrelation-time-bars/requirements.txt
index 4ed3c06..9dd9f53 100644
--- a/1-autocorrelation-time-bars/requirements.txt
+++ b/1-autocorrelation-time-bars/requirements.txt
@@ -1,4 +1,4 @@
-numpy==1.16.4
+numpy==1.22.0
 numpy_ext==0.9.0
 pandas==0.25.3
 tables==3.5.1