diff --git a/run b/run
index d2713bf..5cbe8d3 100755
--- a/run
+++ b/run
@@ -232,7 +232,7 @@ step60() {
   git archive --prefix=zig-$TO_/ $TO | tar -C .. -x
   {
     pushd "../zig-$TO_"
-    "../zig-$FROM_/build/stage3/bin/zig" build --zig-lib-dir lib update-zig1
+    "../zig-$FROM_/build/stage3/bin/zig" build update-zig1
     popd
   }
   echo "zig1.wasm updated for $TO_"