diff --git a/cmake/download_cpm.cmake b/cmake/download_cpm.cmake
index dd69ebe..6d7718c 100644
--- a/cmake/download_cpm.cmake
+++ b/cmake/download_cpm.cmake
@@ -4,7 +4,7 @@
 
 file(
   DOWNLOAD
-  https://github.com/cpm-cmake/CPM.cmake/releases/download/v0.40.0/CPM.cmake
+  https://github.com/cpm-cmake/CPM.cmake/releases/download/v0.42.0/CPM.cmake
   ${CMAKE_CURRENT_BINARY_DIR}/cmake/CPM.cmake
 )
 include(${CMAKE_CURRENT_BINARY_DIR}/cmake/CPM.cmake)
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 9039a54..e360f22 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2024-2025 by Cliff Green
+# Copyright (c) 2024-2026 by Cliff Green
 #
 # This CMake file invokes all of the example code CMake files for
 # the presentations repository. Each subdirectory can be built
diff --git a/examples/intro_generic_programming/CMakeLists.txt b/examples/intro_generic_programming/CMakeLists.txt
index d9f0fb6..0a857a4 100644
--- a/examples/intro_generic_programming/CMakeLists.txt
+++ b/examples/intro_generic_programming/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2024-2025 by Cliff Green
+# Copyright (c) 2024-2026 by Cliff Green
 #
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
@@ -15,7 +15,7 @@ target_compile_features ( intro_generic_programming_test PRIVATE cxx_std_20 )
 # add dependencies
 include ( ../../cmake/download_cpm.cmake )
 
-CPMAddPackage ( "gh:catchorg/Catch2@3.8.0" )
+CPMAddPackage ( "gh:catchorg/Catch2@3.11.0" )
 CPMAddPackage ( "gh:TimQuelch/decimal#1.0.0" )
 
 # link dependencies
diff --git a/examples/std_span/CMakeLists.txt b/examples/std_span/CMakeLists.txt
index db4aab0..9107527 100644
--- a/examples/std_span/CMakeLists.txt
+++ b/examples/std_span/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2024-2025 by Cliff Green
+# Copyright (c) 2024-2026 by Cliff Green
 #
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
@@ -15,7 +15,7 @@ target_compile_features ( std_span_test PRIVATE cxx_std_20 )
 # add dependencies
 include ( ../../cmake/download_cpm.cmake )
 
-CPMAddPackage ( "gh:catchorg/Catch2@3.8.0" )
+CPMAddPackage ( "gh:catchorg/Catch2@3.11.0" )
 
 # link dependencies
 target_link_libraries ( std_span_test PRIVATE Catch2::Catch2WithMain )
diff --git a/examples/unit_test_with_catch2/CMakeLists.txt b/examples/unit_test_with_catch2/CMakeLists.txt
index 4709170..44051c2 100644
--- a/examples/unit_test_with_catch2/CMakeLists.txt
+++ b/examples/unit_test_with_catch2/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2024-2025 by Cliff Green
+# Copyright (c) 2024-2026 by Cliff Green
 #
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
@@ -15,7 +15,7 @@ target_compile_features ( unit_test_with_catch2_test PRIVATE cxx_std_20 )
 # add dependencies
 include ( ../../cmake/download_cpm.cmake )
 
-CPMAddPackage ( "gh:catchorg/Catch2@3.8.0" )
+CPMAddPackage ( "gh:catchorg/Catch2@3.11.0" )
 
 # link dependencies
 target_link_libraries ( unit_test_with_catch2_test PRIVATE Catch2::Catch2WithMain )