diff --git a/DEPS b/DEPS
index ec64fb91f02b..bb7940410784 100644
--- a/DEPS
+++ b/DEPS
@@ -116,7 +116,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + '67befc4acace09d636db2f1f23e47719fa7e8795',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + '4a37279db248051cd25bbc93526c3001bdb8d785',
 
    # Fuchsia compatibility
    #
diff --git a/tools/gn b/tools/gn
index 7bc0fafca87b..93d6de9489b1 100755
--- a/tools/gn
+++ b/tools/gn
@@ -93,6 +93,9 @@ def to_gn_args(args):
 
     gn_args['embedder_for_target'] = args.embedder_for_target
 
+    if args.operator_new_alignment is not None:
+      gn_args['operator_new_alignment'] = args.operator_new_alignment
+
     enable_lto = args.lto
     if args.unoptimized:
       # There is no point in enabling LTO in unoptimized builds.
@@ -252,6 +255,7 @@ def parse_args(args):
   parser.add_argument('--target-toolchain', type=str)
   parser.add_argument('--target-triple', type=str)
   parser.add_argument('--toolchain-prefix', type=str)
+  parser.add_argument('--operator-new-alignment', dest='operator_new_alignment', type=str, default=None)
 
   parser.add_argument('--enable-vulkan', action='store_true', default=False)