diff --git a/server/build-osx.sh b/server/build-osx.sh
index fff5d704..2b9957e9 100755
--- a/server/build-osx.sh
+++ b/server/build-osx.sh
@@ -260,6 +260,8 @@ _build_server_osx() {
     ssh $PG_SSH_OSX "cp -pR /opt/local/Current/lib/libpng16*.dylib $PG_STAGING/stackbuilder.app/Contents/Frameworks/" || _die "Failed to copy the latest libpng16"
     ssh $PG_SSH_OSX "cp -pR /opt/local/Current/lib/libiconv*.dylib $PG_STAGING/stackbuilder.app/Contents/Frameworks/" || _die "Failed to copy the latest libiconv"
 
+    ssh $PG_SSH_OSX "cp -pR /opt/local/Current/lib/libexpat*.dylib $PG_STAGING/stackbuilder.app/Contents/Frameworks/" || _die "Failed to copy the latest libexpat"
+
     # Copying plperl to staging/osx directory as we would not like to update the _rewrite_so_refs for it.
     ssh $PG_SSH_OSX "cp -f $PG_PATH_OSX/server/staging_cache/osx.build/lib/postgresql/plperl.so $PG_PATH_OSX/server/staging_cache/osx.build/"