diff --git a/tools/building.py b/tools/building.py
index f11e0605b21a9..bc09df6d26012 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -53,7 +53,7 @@
 
 #  Building
 binaryen_checked = False
-EXPECTED_BINARYEN_VERSION = 127
+EXPECTED_BINARYEN_VERSION = 128
 
 _is_ar_cache: dict[str, bool] = {}
 # the exports the user requested