diff --git a/once/update.sh b/once/update.sh
index e09572e..f82cee6 100755
--- a/once/update.sh
+++ b/once/update.sh
@@ -11,7 +11,8 @@ else
 fi
 
 if [ -f "$SYSROOT/etc/localtime" ]; then
-	cp -p "$SYSROOT/etc/localtime" "$SYSROOT/etc/localtime.site"
+	rm -f "$SYSROOT/etc/localtime.site"
+	cat   "$SYSROOT/etc/localtime" > "$SYSROOT/etc/localtime.site"
 fi
 
 tarballs=$(ls /updates/*.tar.gz 2>/dev/null)
@@ -49,7 +50,8 @@ for tarball in $tarballs; do
 done
 
 if [ -f "$SYSROOT/etc/localtime.site" ]; then
-	mv "$SYSROOT/etc/localtime.site" "$SYSROOT/etc/localtime"
+	cat "$SYSROOT/etc/localtime.site" > "$SYSROOT/etc/localtime"
+	rm -f "$SYSROOT/etc/localtime.site"
 fi
 
 rm -f /updates/update.pending