diff --git a/CMakeLists.txt b/CMakeLists.txt
index b6b51bd..18adde9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,14 +12,14 @@ cmake_minimum_required(VERSION 3.11...3.28)
 project(
     GMLC_UTILITIES
     LANGUAGES CXX
-    VERSION 0.6.0
+    VERSION 0.6.1
 )
 
 # -----------------------------------------------------------------------------
 # GMLC UTILITIES library Version number
 # -----------------------------------------------------------------------------
 set(GMLC_UTILITIES_VERSION_BUILD)
-set(GMLC_UTILITIES_DATE "2024-01-02")
+set(GMLC_UTILITIES_DATE "2024-01-22")
 
 set(GMLC_UTILITIES_VERSION_STRING "${GMLC_UTILITIES_VERSION} (${GMLC_UTILITIES_DATE})")
 
diff --git a/gmlc/utilities/stringConversion.h b/gmlc/utilities/stringConversion.h
index 4002972..99b6246 100644
--- a/gmlc/utilities/stringConversion.h
+++ b/gmlc/utilities/stringConversion.h
@@ -22,6 +22,7 @@ All rights reserved. SPDX-License-Identifier: BSD-3-Clause
 #include "charMapper.h"
 #include "stringOps.h"
 
+#include <cstdint>
 #include <string>
 #include <type_traits>
 #include <vector>