diff --git a/qt6-after/qt6-migrated-legatus/Lts/Plugins/AudioVideoManagement/CMakeLists.txt b/qt6-after/qt6-migrated-legatus/Lts/Plugins/AudioVideoManagement/CMakeLists.txt
index 32d13a7cf..8cf4c5760 100755
--- a/qt6-after/qt6-migrated-legatus/Lts/Plugins/AudioVideoManagement/CMakeLists.txt
+++ b/qt6-after/qt6-migrated-legatus/Lts/Plugins/AudioVideoManagement/CMakeLists.txt
@@ -5,6 +5,11 @@
 # Created by Christian Ehrlicher, SLSE, 2016-02-29
 #
 
+# Suppress CMP0167 warning: FindBoost module is removed in CMake 3.30+
+if(POLICY CMP0167)
+  cmake_policy(SET CMP0167 OLD)
+endif()
+
 IF(${CMAKE_VERSION} VERSION_LESS "3.6.0")
   FIND_PACKAGE(Boost COMPONENTS system) # system wird nicht gebraucht, aber ohne Komponente wird das Boost::boost imported Target nicht angelegt (cmake <= 3.5.2)
 ELSE()
diff --git a/qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/CMakeLists.txt b/qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/CMakeLists.txt
index 68fd5ff33..4689d8156 100755
--- a/qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/CMakeLists.txt
+++ b/qt6-after/qt6-migrated-legatus/Lts/Services/AudioVideoManagement/CMakeLists.txt
@@ -4,6 +4,11 @@
 # $Author$
 #
 
+# Suppress CMP0167 warning: FindBoost module is removed in CMake 3.30+
+if(POLICY CMP0167)
+  cmake_policy(SET CMP0167 OLD)
+endif()
+
 IF(${CMAKE_VERSION} VERSION_LESS "3.6.0")
   FIND_PACKAGE(Boost COMPONENTS system) # system wird nicht gebraucht, aber ohne Komponente wird das Boost::boost imported Target nicht angelegt (cmake <= 3.5.2)
 ELSE()
diff --git a/qt6-after/qt6-migrated-legatus/cmake/FindRTI.cmake b/qt6-after/qt6-migrated-legatus/cmake/FindRTI.cmake
index b962f3754..0d3de5bd3 100755
--- a/qt6-after/qt6-migrated-legatus/cmake/FindRTI.cmake
+++ b/qt6-after/qt6-migrated-legatus/cmake/FindRTI.cmake
@@ -29,6 +29,12 @@
 
 
 SET(_rti_gcc_arch "")
+
+# Suppress CMP0153 warning: EXEC_PROGRAM is deprecated
+if(POLICY CMP0153)
+  cmake_policy(SET CMP0153 OLD)
+endif()
+
 # Check if RTI_DIR is not set OR is empty (cached empty string from previous failed detection)
 IF(NOT RTI_DIR OR RTI_DIR STREQUAL "")
   # First check RTI_INSTALL_DIR CMake variable (set by parent CMakeLists.txt)
diff --git a/qt6-after/qt6-migrated-legatus/cmake/NGLMacros.cmake b/qt6-after/qt6-migrated-legatus/cmake/NGLMacros.cmake
index 898c42000..b21abb1ae 100755
--- a/qt6-after/qt6-migrated-legatus/cmake/NGLMacros.cmake
+++ b/qt6-after/qt6-migrated-legatus/cmake/NGLMacros.cmake
@@ -33,6 +33,11 @@
 
 INCLUDE(GenerateExportHeader)
 
+# Suppress CMP0177 warning: install() DESTINATION normalization
+if(POLICY CMP0177)
+  cmake_policy(SET CMP0177 OLD)
+endif()
+
 # Compatibility stubs for Qt5 CMake macros when Qt6 is used.
 # These stubs allow configure to succeed; actual resource/ui generation should be addressed during source migration.
 if(NOT COMMAND QT5_ADD_RESOURCES)