diff --git a/ThirdParty/flac/README.md b/ThirdParty/flac/README.md
index 03d0e5df6..aa1e0aaf1 100644
--- a/ThirdParty/flac/README.md
+++ b/ThirdParty/flac/README.md
@@ -13,3 +13,6 @@ Version v1.3.1-101-g66d060c7 was used from the following repository:
 https://github.com/xiph/flac.git
 
 A single patch was used, and is included. Affects x86_64, but not arm64.
+
+Also, x86_64 had to be built separately to enable the intrinsic
+optimizations. Oops.
diff --git a/ThirdParty/flac/lib/libFLAC.8.dylib b/ThirdParty/flac/lib/libFLAC.8.dylib
index 1771cd34c..0b0932212 100755
Binary files a/ThirdParty/flac/lib/libFLAC.8.dylib and b/ThirdParty/flac/lib/libFLAC.8.dylib differ