diff --git a/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/CMakeLists.txt b/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/CMakeLists.txt
index 3b3c3156057..21160f9701d 100644
--- a/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Hyperbolic_triangulation_2/demo/Hyperbolic_triangulation_2/CMakeLists.txt
@@ -8,10 +8,6 @@ set(CMAKE_AUTOMOC ON)
 
 cmake_minimum_required(VERSION 3.1...3.13)
 
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
-
 if(POLICY CMP0071)
   cmake_policy(SET CMP0071 NEW)
 endif()
diff --git a/Hyperbolic_triangulation_2/examples/Hyperbolic_triangulation_2/CMakeLists.txt b/Hyperbolic_triangulation_2/examples/Hyperbolic_triangulation_2/CMakeLists.txt
index 0bca3ad35e9..e0d12591bab 100644
--- a/Hyperbolic_triangulation_2/examples/Hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Hyperbolic_triangulation_2/examples/Hyperbolic_triangulation_2/CMakeLists.txt
@@ -4,11 +4,7 @@
 
 project( Hyperbolic_triangulation_2_Examples )
 
-cmake_minimum_required(VERSION 2.8.10)
-
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
+cmake_minimum_required(VERSION 3.1...3.13)
 
 find_package(CGAL QUIET COMPONENTS Core )
 
diff --git a/Hyperbolic_triangulation_2/test/Hyperbolic_triangulation_2/CMakeLists.txt b/Hyperbolic_triangulation_2/test/Hyperbolic_triangulation_2/CMakeLists.txt
index 53c11677196..73ee571e17d 100644
--- a/Hyperbolic_triangulation_2/test/Hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Hyperbolic_triangulation_2/test/Hyperbolic_triangulation_2/CMakeLists.txt
@@ -4,11 +4,7 @@
 
 project( Hyperbolic_triangulation_2_Tests )
 
-cmake_minimum_required(VERSION 2.8.10)
-
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
+cmake_minimum_required(VERSION 3.1...3.13)
 
 find_package(CGAL QUIET COMPONENTS Core )
 
diff --git a/Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt b/Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
index 456c466f607..e0eb6720e8b 100644
--- a/Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Periodic_4_hyperbolic_triangulation_2/demo/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
@@ -10,17 +10,12 @@ include_directories( ${CMAKE_BINARY_DIR} )
 # Instruct CMake to run moc automatically when needed.
 set(CMAKE_AUTOMOC ON) 
 
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.1...3.13)
 
 if(POLICY CMP0071)
   cmake_policy(SET CMP0071 NEW)
 endif()
 
-
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
-
 find_package(CGAL QUIET COMPONENTS Core Qt5)
 include(${CGAL_USE_FILE})
 
diff --git a/Periodic_4_hyperbolic_triangulation_2/examples/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt b/Periodic_4_hyperbolic_triangulation_2/examples/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
index 3dbfe7aad40..9cdcb06874c 100644
--- a/Periodic_4_hyperbolic_triangulation_2/examples/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Periodic_4_hyperbolic_triangulation_2/examples/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
@@ -4,11 +4,7 @@
 
 project( Periodic_4_hyperbolic_triangulation_2_Examples )
 
-cmake_minimum_required(VERSION 2.8.10)
-
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
+cmake_minimum_required(VERSION 3.1...3.13)
 
 find_package(CGAL QUIET COMPONENTS Core )
 
diff --git a/Periodic_4_hyperbolic_triangulation_2/test/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt b/Periodic_4_hyperbolic_triangulation_2/test/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
index af1462f02c3..e005c227093 100644
--- a/Periodic_4_hyperbolic_triangulation_2/test/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
+++ b/Periodic_4_hyperbolic_triangulation_2/test/Periodic_4_hyperbolic_triangulation_2/CMakeLists.txt
@@ -4,11 +4,7 @@
 
 project( Periodic_4_hyperbolic_triangulation_2_Tests )
 
-cmake_minimum_required(VERSION 2.8.10)
-
-if(POLICY CMP0054)
-  cmake_policy(SET CMP0054 NEW)
-endif()
+cmake_minimum_required(VERSION 3.1...3.13)
 
 find_package(CGAL QUIET COMPONENTS Core )