diff --git a/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf b/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
index 9c60aa5f5a..ae98734336 100644
--- a/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
+++ b/CryptoPkg/Library/BaseCryptLib/UnitTestHostBaseCryptLib.inf
@@ -18,7 +18,7 @@
 #
 # The following information is for reference only and not required by the build tools.
 #
-#  VALID_ARCHITECTURES           = IA32 X64
+#  VALID_ARCHITECTURES           = IA32 X64 AARCH64
 #
 
 [Sources]
@@ -63,6 +63,9 @@
 [Sources.X64]
   Rand/CryptRandTsc.c
 
+[Sources.AARCH64]
+  Rand/CryptRand.c
+
 [Packages]
   MdePkg/MdePkg.dec
   CryptoPkg/CryptoPkg.dec