diff --git a/scripts/cmake/ConanSetup.cmake b/scripts/cmake/ConanSetup.cmake
index d22c3660e92bfc8d2c567b49fb4c6061a0a10263..f6308fecbd72fe8a36bf9197dc297b7f07e4eddf 100644
--- a/scripts/cmake/ConanSetup.cmake
+++ b/scripts/cmake/ConanSetup.cmake
@@ -128,7 +128,7 @@ conan_cmake_run(
     GENERATORS virtualrunenv
 )
 
-if(NOT ${OGS_CONAN_BUILD} MATCHES "never|always|missing")
+if(NOT ${OGS_CONAN_BUILD} MATCHES "never|always|missing|outdated")
     message(STATUS "Warning: Resetting CMake variable OGS_CONAN_BUILD to its default value of 'missing'")
     set(OGS_CONAN_BUILD "missing" CACHE INTERNAL "")
 endif()