diff --git a/run b/run
index 9343ed1..9f92df5 100755
--- a/run
+++ b/run
@@ -630,6 +630,24 @@ step26() {
   }
 }
 
+# commit a6c8ee5231230947c928bbe1c6a39eb6e1bb9c5b
+# Author: Eric Joldasov <bratishkaerik@getgoogleoff.me>
+# Date:   2023-06-14T17:27:03+03:00
+#
+#     compiler: rename "@XToY" to "@YFromX", zig fmt: rewrite them
+#
+STEP27=a6c8ee5231230947c928bbe1c6a39eb6e1bb9c5b
+STEP27_=0.10.0-3726-ga6c8ee5231
+step27() {
+  rm -fr "../zig-$STEP27_"
+  git archive --prefix=zig-$STEP27_/ $STEP27 | tar -C .. -x
+  {
+    pushd "../zig-$STEP27_"
+    ../zig-$STEP26_/build/zig2 build --zig-lib-dir lib update-zig1
+    popd
+  }
+}
+
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
   set -xeuo pipefail
   step=${1:-step00}
@@ -663,4 +681,5 @@ if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
   if [[ "$step" -le 24 ]]; then step24; fi
   if [[ "$step" -le 25 ]]; then step25; fi
   if [[ "$step" -le 26 ]]; then step26; fi
+  if [[ "$step" -le 27 ]]; then step27; fi
 fi