diff --git a/Modules/Filtering/AnisotropicDiffusionLBR/CMakeLists.txt b/Modules/Filtering/AnisotropicDiffusionLBR/CMakeLists.txt
index b746377e0ab..1d78a2730ba 100644
--- a/Modules/Filtering/AnisotropicDiffusionLBR/CMakeLists.txt
+++ b/Modules/Filtering/AnisotropicDiffusionLBR/CMakeLists.txt
@@ -1,5 +1,3 @@
-cmake_minimum_required(VERSION 3.16.3)
-
 project(
   AnisotropicDiffusionLBR
   VERSION
@@ -10,14 +8,8 @@ project(
 
 # Header only module, no libraries set(AnisotropicDiffusionLBR_LIBRARIES AnisotropicDiffusionLBR)
 
-if(NOT ITK_SOURCE_DIR)
-  find_package(ITK 5.1 REQUIRED)
-  list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
-  include(ITKModuleExternal)
-else()
-  set(ITK_DIR ${CMAKE_BINARY_DIR})
-  itk_module_impl()
-endif()
+set(ITK_DIR ${CMAKE_BINARY_DIR})
+itk_module_impl()
 
 # itk_module_examples() is intentionally omitted: the upstream
 # examples/ directory is not part of the whitelist-based ingest
diff --git a/Modules/Filtering/Cuberille/CMakeLists.txt b/Modules/Filtering/Cuberille/CMakeLists.txt
index e17b3840ee6..3376d12f8b2 100644
--- a/Modules/Filtering/Cuberille/CMakeLists.txt
+++ b/Modules/Filtering/Cuberille/CMakeLists.txt
@@ -1,10 +1,3 @@
-cmake_minimum_required(VERSION 3.16.3)
 project(Cuberille)
 
-if(NOT ITK_SOURCE_DIR)
-  find_package(ITK 4.10 REQUIRED)
-  list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
-  include(ITKModuleExternal)
-else()
-  itk_module_impl()
-endif()
+itk_module_impl()
diff --git a/Modules/Filtering/LabelErodeDilate/CMakeLists.txt b/Modules/Filtering/LabelErodeDilate/CMakeLists.txt
index f949f15f571..424260f967c 100644
--- a/Modules/Filtering/LabelErodeDilate/CMakeLists.txt
+++ b/Modules/Filtering/LabelErodeDilate/CMakeLists.txt
@@ -1,10 +1,3 @@
-cmake_minimum_required(VERSION 3.16.3)
 project(LabelErodeDilate)
 
-if(NOT ITK_SOURCE_DIR)
-  find_package(ITK REQUIRED)
-  list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
-  include(ITKModuleExternal)
-else()
-  itk_module_impl()
-endif()
+itk_module_impl()
diff --git a/Modules/Registration/Montage/CMakeLists.txt b/Modules/Registration/Montage/CMakeLists.txt
index 7581e951133..58a5e8ba9c9 100644
--- a/Modules/Registration/Montage/CMakeLists.txt
+++ b/Modules/Registration/Montage/CMakeLists.txt
@@ -1,5 +1,3 @@
-cmake_minimum_required(VERSION 3.16.3)
-
 if(CMAKE_CXX_STANDARD EQUAL "98")
   message(
     FATAL_ERROR
@@ -33,13 +31,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   endif()
 endif()
 
-if(NOT ITK_SOURCE_DIR)
-  find_package(ITK REQUIRED)
-  list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
-  include(ITKModuleExternal)
-else()
-  set(ITK_DIR ${CMAKE_BINARY_DIR})
-  itk_module_impl()
-endif()
+set(ITK_DIR ${CMAKE_BINARY_DIR})
+itk_module_impl()
 
 itk_module_examples()