diff --git a/README.md b/README.md
index a39230d..0677278 100644
--- a/README.md
+++ b/README.md
@@ -70,13 +70,14 @@ hints:
 2. `-Dstrip=true` to strip debug symbols.
 
 For reference, size of the shared library and helper binaries when compiled
-with `-Dstrip=true -Drelease-small=true`:
+with `zig build -Dstrip=true -Doptimize=ReleaseSmall`:
 
-      28K zig-out/bin/turbonss-analyze
-      20K zig-out/bin/turbonss-getent
-      24K zig-out/bin/turbonss-makecorpus
-     140K zig-out/bin/turbonss-unix2db
-      24K zig-out/lib/libnss_turbo.so.2.0.0
+    $ ls -h1s zig-out/{bin/*,lib/libnss_turbo.so.2.0.0}
+     24K zig-out/bin/turbonss-analyze
+     20K zig-out/bin/turbonss-getent
+     24K zig-out/bin/turbonss-makecorpus
+    136K zig-out/bin/turbonss-unix2db
+     20K zig-out/lib/libnss_turbo.so.2.0.0
 
 Many thanks to Ulrich Drepper for [teaching how to link it properly][dso].