diff --git a/cmake/external/openblas.cmake b/cmake/external/openblas.cmake
index b6bd24fe8ae28b290f93d74dc5ca2b98302bf2a5..bf234320a0db0def3d5f6c359db3b5167c4d9c68 100644
--- a/cmake/external/openblas.cmake
+++ b/cmake/external/openblas.cmake
@@ -37,7 +37,7 @@ IF(NOT ${CBLAS_FOUND})
         SET(OPTIONAL_ARGS HOSTCC=${HOST_C_COMPILER} TARGET=ARMV7 USE_THREAD=0 libs)
     ELSE()
         SET(OPENBLAS_COMMIT "v0.2.19")
-        SET(OPENBLAS_ARGS DYNAMIC_ARCH=1 libs)
+        SET(OPTIONAL_ARGS DYNAMIC_ARCH=1 libs NUM_THREADS=64)
     ENDIF()
 
     ExternalProject_Add(