--- CMakeLists.txt	2023-05-11 09:00:20.000000000 +0800
+++ CMakeLists.txt	2024-01-04 14:37:24.000000000 +0800
@@ -27,7 +27,7 @@
 
 # Set default minimum C++ standard
 if(FINITE_DIFF_TOPLEVEL_PROJECT)
-    set(CMAKE_CXX_STANDARD 11)
+    set(CMAKE_CXX_STANDARD 14)
     set(CMAKE_CXX_STANDARD_REQUIRED ON)
     set(CMAKE_CXX_EXTENSIONS OFF)
 endif()
@@ -63,11 +63,11 @@
 target_link_libraries(finitediff_finitediff PRIVATE finitediff::warnings)
 
 # Eigen
-include(eigen)
+find_package(Eigen3 3.3 REQUIRED NO_MODULE)
 target_link_libraries(finitediff_finitediff PUBLIC Eigen3::Eigen)
 
 # Logger
-include(spdlog)
+find_package(spdlog REQUIRED)
 target_link_libraries(finitediff_finitediff PUBLIC spdlog::spdlog)
 
 ################################################################################

--- tests/CMakeLists.txt	2023-05-11 09:00:20.000000000 +0800
+++ tests/CMakeLists.txt	2024-01-04 14:53:35.000000000 +0800
@@ -18,7 +18,7 @@
 include(finitediff_warnings)
 target_link_libraries(finitediff_tests PRIVATE finitediff::warnings)
 
-include(catch2)
+find_package(catch2)
 target_link_libraries(finitediff_tests PUBLIC Catch2::Catch2WithMain)
 
 ################################################################################
@@ -31,8 +31,6 @@
 # Register tests
 ################################################################################
 
-FetchContent_GetProperties(catch2)
-list(APPEND CMAKE_MODULE_PATH ${catch2_SOURCE_DIR}/extras)
 include(Catch)
 
 # Register tests