diff --git a/DEPS b/DEPS
index 578eb84239d00..75cc6a13d10d1 100644
--- a/DEPS
+++ b/DEPS
@@ -255,7 +255,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + '05ec9f7124191c7ba354521f3ffd34b09af872e7',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + 'b1e6e81b568b633f05cb9ac4afb465013b774a80',
 
    # Fuchsia compatibility
    #
diff --git a/lib/web_ui/skwasm/BUILD.gn b/lib/web_ui/skwasm/BUILD.gn
index 362a75a1a7b84..dfdb8d369f089 100644
--- a/lib/web_ui/skwasm/BUILD.gn
+++ b/lib/web_ui/skwasm/BUILD.gn
@@ -49,11 +49,6 @@ wasm_lib("skwasm") {
       "-sASSERTIONS=1",
       "-sGL_ASSERTIONS=1",
     ]
-  } else {
-    ldflags += [
-      "-Oz",
-      "--closure=1",
-    ]
   }
 
   deps = [
diff --git a/third_party/canvaskit/BUILD.gn b/third_party/canvaskit/BUILD.gn
index d4d0801220f82..e567080af6567 100644
--- a/third_party/canvaskit/BUILD.gn
+++ b/third_party/canvaskit/BUILD.gn
@@ -85,6 +85,7 @@ wasm_toolchain("skwasm") {
 
     # skwasm is multithreaded
     wasm_use_pthreads = true
+    wasm_prioritize_size = true
   }
 }