diff --git a/.gitlab/ci/ctest_exclusions.cmake b/.gitlab/ci/ctest_exclusions.cmake
index 020ab0818789e27fd7b6ad0d56b3fbac1f34f919..6bb8533dcdf01834bf37706661e02bc2fb7885f2 100644
--- a/.gitlab/ci/ctest_exclusions.cmake
+++ b/.gitlab/ci/ctest_exclusions.cmake
@@ -305,6 +305,8 @@ if ("$ENV{CMAKE_CONFIGURATION}" MATCHES "macos_x86_64")
     # MacOS OpenGL issue (intermittent)
     "^VTK::RenderingCellGridPython-TestCellGridRendering$"
     "^VTK::FiltersCellGridPython-TestUnstructuredGridToCellGrid$"
+    
+    # https://gitlab.kitware.com/vtk/vtk/-/issues/19372
     "^VTK::IOIOSSPython-TestIOSSCellGridReader$"
   )
 endif ()