--- a/cmake/modules/FindCatch2.cmake
+++ b/cmake/modules/FindCatch2.cmake
@@ -33,7 +33,6 @@
     "/usr/include"
     "$ENV{CPLUS_INCLUDE_PATH}"
     "$ENV{CPATH}"
-    "${CMAKE_SOURCE_DIR}/thirdparty/catch"
     )
 
 # First try to use the standard find_package that should be able to find the
--- a/cmake/modules/FindEigen3.cmake
+++ b/cmake/modules/FindEigen3.cmake
@@ -34,7 +34,6 @@
     "/usr/include"
     "$ENV{CPLUS_INCLUDE_PATH}"
     "$ENV{CPATH}"
-    "${CMAKE_SOURCE_DIR}/thirdparty/eigen"
     )
 
 # First try to use the standard find_package that should be able to find the
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -52,7 +52,7 @@
 #######################################################################
 
 if (SKBUILD)
-    add_subdirectory(thirdparty/pybind11)
+    find_package(pybind11 REQUIRED)
     add_subdirectory(interface/python)
     set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 endif()