diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98d0093..399aa1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [24.01.6] 2024-06-20
+### fixed
+- avoid errors with numpy 2.0 setting version restriction to < 2.0
 
 ## [24.01.5] 2024-06-03
 ### fixed
diff --git a/Makefile b/Makefile
index 1433b6a..28c1cb2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 SHELL := /bin/bash
 PROJECT := tagpack-tool
 VENV := .venv
-RELEASE := 'v24.01.5'
+RELEASE := 'v24.01.6'
 # RELEASESEM := 'v1.9.0'
 
 all: format lint test build
diff --git a/setup.cfg b/setup.cfg
index 6d074c5..cce551f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -69,6 +69,7 @@ install_requires =
     cashaddress~=1.0.4
     anytree~=2.9.0
     base58~=2.1
+    numpy<2.0
 
 [options.packages.find]
 where = src