diff --git a/builder/install/versions.sh b/builder/install/versions.sh
index 85d8ae1e43..4b0a1dea68 100644
--- a/builder/install/versions.sh
+++ b/builder/install/versions.sh
@@ -3,10 +3,10 @@
 export B64_VERSION=1.2.1
 export CARES_VERSION=1.34.2
 export GOOGLETEST_REVISION=v1.15.2
-export GRPC_REVISION=v1.80.0
+export GRPC_REVISION=v1.81.0-pre1
 export JSONCPP_REVISION=1.9.6
 export PROMETHEUS_CPP_REVISION=v1.2.4
-export PROTOBUF_VERSION=v31.1
+export PROTOBUF_VERSION=v33.5
 export TBB_VERSION=2022.0.0
 export CIVETWEB_VERSION=v1.16
 export ABSEIL_VERSION=20250512.1
diff --git a/builder/third_party/grpc b/builder/third_party/grpc
index f5e2d6e856..6244f3b59e 160000
--- a/builder/third_party/grpc
+++ b/builder/third_party/grpc
@@ -1 +1 @@
-Subproject commit f5e2d6e856176c2f6b7691032adfefe21e5f64c1
+Subproject commit 6244f3b59e2784b57f32b7fd3276d2e8eed630d1
diff --git a/builder/third_party/protobuf b/builder/third_party/protobuf
index 74211c0dfc..b6f9284da8 160000
--- a/builder/third_party/protobuf
+++ b/builder/third_party/protobuf
@@ -1 +1 @@
-Subproject commit 74211c0dfc2777318ab53c2cd2c317a2ef9012de
+Subproject commit b6f9284da830b69be787732ffdaa35049d20a088