diff --git a/folly/CMakeLists.txt b/folly/CMakeLists.txt
index dc77e24731..cd6635ffd6 100644
--- a/folly/CMakeLists.txt
+++ b/folly/CMakeLists.txt
@@ -807,6 +807,9 @@
   NAME memcpy-impl
   SRCS
     FollyMemcpy.cpp
+    $<$<BOOL:${IS_AARCH64_ARCH}>:memcpy_select_aarch64.cpp>
+  DEPS
+    $<$<BOOL:${IS_AARCH64_ARCH}>:folly_external_aor_memcpy_aarch64>
 )
 
 folly_add_library(
@@ -860,6 +868,9 @@
   NAME memset-impl
   SRCS
     FollyMemset.cpp
+    $<$<BOOL:${IS_AARCH64_ARCH}>:memset_select_aarch64.cpp>
+  DEPS
+    $<$<BOOL:${IS_AARCH64_ARCH}>:folly_external_aor_memset_aarch64>
 )
 
 folly_add_library(