diff --git a/.github/workflows/build_run_unit_test_cmake.yml b/.github/workflows/build_run_unit_test_cmake.yml
index 311762a..2186356 100644
--- a/.github/workflows/build_run_unit_test_cmake.yml
+++ b/.github/workflows/build_run_unit_test_cmake.yml
@@ -12,7 +12,7 @@ jobs:
   build_matrix:
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-14]
+        os: [ubuntu-latest, windows-latest, macos-15]
         # os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     defaults:
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 5a72e14..c6300bb 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -15,8 +15,8 @@ target_compile_features ( shared_buffer_test PRIVATE cxx_std_20 )
 # add dependencies
 include ( ../cmake/download_cpm.cmake )
 
-CPMAddPackage ( "gh:catchorg/Catch2@3.7.0" )
-CPMAddPackage ( "gh:connectivecpp/utility-rack@1.0.3" )
+CPMAddPackage ( "gh:catchorg/Catch2@3.8.0" )
+CPMAddPackage ( "gh:connectivecpp/utility-rack@1.0.4" )
 
 # link dependencies
 target_link_libraries ( shared_buffer_test PRIVATE shared_buffer utility_rack Catch2::Catch2WithMain )
diff --git a/test/shared_buffer_test.cpp b/test/shared_buffer_test.cpp
index 4776df7..8b01c62 100644
--- a/test/shared_buffer_test.cpp
+++ b/test/shared_buffer_test.cpp
@@ -260,6 +260,8 @@ TEST_CASE ( "Mutable shared buffer append",
     REQUIRE (sb == ta);
   }
 
+
+
   SECTION ( "Append mutable shared buffer" ) {
     sb.append(ta);
     REQUIRE (sb == ta);