diff --git a/CMakeLists.txt b/CMakeLists.txt
index 084cd7a..fa890b5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,7 +56,7 @@ if(MY_FIBONACCI_ENABLE_TESTS)
     cpmaddpackage(
       NAME ut
       GITHUB_REPOSITORY boost-ext/ut
-      VERSION 2.1.1
+      VERSION 2.3.1
       OPTIONS "BOOST_UT_DISABLE_MODULE ON"
     )
   endif()