diff --git a/src/Conan.cmake b/src/Conan.cmake
index 136e1d64..4929eb50 100644
--- a/src/Conan.cmake
+++ b/src/Conan.cmake
@@ -169,6 +169,9 @@ macro(_run_conan1)
         # Pass either autodetected settings or a conan profile
         ${CONAN_SETTINGS}
         ${OUTPUT_QUIET}
+        CONF
+        -c tools.system.package_manager:mode=install
+        -c tools.system.package_manager:sudo=True
       )
     endforeach()
   endif()
@@ -217,7 +220,11 @@ macro(_run_conan2)
   endif()
 
   if(NOT _args_INSTALL_ARGS)
-    set(_args_INSTALL_ARGS "--build=missing")
+    set(_args_INSTALL_ARGS
+        --build=missing
+        -c tools.system.package_manager:mode=install
+        -c tools.system.package_manager:sudo=True
+    )
   endif()
 
   set(CONAN_HOST_PROFILE "${_args_HOST_PROFILE}" CACHE STRING "Conan host profile" FORCE)