diff --git a/.bazelrc b/.bazelrc
index 3a908cac2..ec248c840 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -181,6 +181,7 @@ common:libc++ --@envoy//bazel:libc++=true
 build:libstdc++ --action_env=BAZEL_LINKLIBS=-l%:libstdc++.a
 build:libstdc++ --@envoy//bazel:libc++=false
 build:libstdc++ --@envoy//bazel:libstdc++=true
+build:libstdc++ --repo_env=BAZEL_USE_LIBSTDCPP=True
 
 
 #############################################################################
diff --git a/.github/config.yml b/.github/config.yml
index c52889510..bdcef6ffc 100644
--- a/.github/config.yml
+++ b/.github/config.yml
@@ -89,11 +89,6 @@ checks:
     required: true
     on-run:
     - mobile-ios-tests
-  mobile-perf:
-    name: Mobile/Perf
-    required: true
-    on-run:
-    - mobile-perf
   mobile-python:
     name: Mobile/Python
     required: true
diff --git a/bazel/repositories.bzl b/bazel/repositories.bzl
index 9af27798e..7bdf62eb5 100644
--- a/bazel/repositories.bzl
+++ b/bazel/repositories.bzl
@@ -1,7 +1,7 @@
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-ENVOY_COMMIT = "686a117609d7df789ac650eee58edc6ffe677ab1"
-ENVOY_SHA = "a45c6a8c3f9c76d920ff50e97882662c0f1d1ac63c45350681c3b71088ea6b05"
+ENVOY_COMMIT = "784c2432a984735c485a17dc3d2b5e021b4e44c2"
+ENVOY_SHA = "d6f6c9f2c9507092456b60581bc26c576aab81364383dae3f30b30e2a4c34a4c"
 
 HDR_HISTOGRAM_C_VERSION = "0.11.8"  # June 18th, 2025
 HDR_HISTOGRAM_C_SHA = "bb95351a6a8b242dc9be1f28562761a84d4cf0a874ffc90a9b630770a6468e94"
diff --git a/tools/base/requirements.txt b/tools/base/requirements.txt
index 6080f17aa..4678d2a3b 100644
--- a/tools/base/requirements.txt
+++ b/tools/base/requirements.txt
@@ -261,9 +261,9 @@ pygments==2.20.0 \
     --hash=sha256:6757cd03768053ff99f3039c1a36d6c0aa0b263438fcab17520b30a303a82b5f \
     --hash=sha256:81a9e26dd42fd28a23a2d169d86d7ac03b46e2f8b59ed4698fb4785f946d0176
     # via pytest
-pytest==9.0.3 \
-    --hash=sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9 \
-    --hash=sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c
+pytest==9.1.0 \
+    --hash=sha256:41dd9148c08072446394cefd3d79701701335a9f4cae69ba92e39f6c7f5c061c \
+    --hash=sha256:8ebb0e7888bdf2bdfc602ec51f8f62d50200af37356c74e503c79a94f5c81f32
     # via
     #   -r tools/base/requirements.in
     #   pytest-dependency
diff --git a/tools/code_format/config.yaml b/tools/code_format/config.yaml
index 6da20aa7e..0c40106d2 100644
--- a/tools/code_format/config.yaml
+++ b/tools/code_format/config.yaml
@@ -180,11 +180,13 @@ paths:
     - source/extensions/filters/http/ext_authz
     - source/extensions/filters/http/ext_proc
     - source/extensions/filters/http/file_system_buffer
+    - source/extensions/filters/http/filter_chain/filter.cc
     - source/extensions/filters/http/gcp_authn
     - source/extensions/filters/http/grpc_field_extraction
     - source/extensions/filters/http/grpc_json_reverse_transcoder
     - source/extensions/filters/http/grpc_json_transcoder
     - source/extensions/filters/http/grpc_stats
+    - source/extensions/filters/http/header_mutation/config.cc
     - source/extensions/filters/http/health_check
     - source/extensions/filters/http/json_to_metadata
     - source/extensions/filters/http/jwt_authn