diff --git a/CMakeLists.txt b/CMakeLists.txt
index a2db3db..a10a942 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -100,13 +100,11 @@ FetchContent_Declare(
 
 set(CMAKE_POLICY_DEFAULT_CMP0077 NEW) 
 
-if(NOT TARGET Eigen3::Eigen)
-  FetchContent_GetProperties(eigen)
-  if(NOT eigen_POPULATED)
-    FetchContent_Populate(eigen)
-    set( BUILD_TESTING OFF )
-    add_subdirectory(${eigen_SOURCE_DIR} ${eigen_BINARY_DIR} EXCLUDE_FROM_ALL)
-  endif()
+find_package(Eigen3 3.4.0 REQUIRED)
+
+if(Eigen3_FOUND)
+  set( BUILD_TESTING OFF )
+  include_directories(${EIGEN3_INCLUDE_DIR})
   if(NOT TARGET Eigen3::Eigen)
     add_library(Eigen3::Eigen ALIAS eigen)
   endif()