diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index 952ffd2..891b1c6 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -296,12 +296,9 @@
     write /sys/kernel/tracing/synthetic_events "rss_stat_throttled unsigned int mm_id; unsigned int curr; int member; long size"
     write /sys/kernel/debug/tracing/synthetic_events "rss_stat_throttled unsigned int mm_id; unsigned int curr; int member; long size"
 
-# Set up histogram triggers
-    # rss_stat_throttled (bucket size == 512KB)
-    chmod 0666 /sys/kernel/tracing/events/kmem/rss_stat/trigger
+    # allow creating event triggers
     chmod 0666 /sys/kernel/debug/tracing/events/kmem/rss_stat/trigger
-    write /sys/kernel/tracing/events/kmem/rss_stat/trigger "hist:keys=mm_id,member:bucket=size/0x80000:onchange($$bucket).rss_stat_throttled(mm_id,curr,member,size)"
-    write /sys/kernel/debug/tracing/events/kmem/rss_stat/trigger "hist:keys=mm_id,member:bucket=size/0x80000:onchange($$bucket).rss_stat_throttled(mm_id,curr,member,size)"
+    chmod 0666 /sys/kernel/tracing/events/kmem/rss_stat/trigger
 
 # Only create the tracing instance if persist.mm_events.enabled
 # Attempting to remove the tracing instance after it has been created
diff --git a/libs/binder/RpcState.cpp b/libs/binder/RpcState.cpp
index f5de5b1..419df86 100644
--- a/libs/binder/RpcState.cpp
+++ b/libs/binder/RpcState.cpp
@@ -27,6 +27,7 @@
 
 #include "Debug.h"
 #include "RpcWireFormat.h"
+#include "Utils.h"
 
 #include <random>
 
@@ -493,9 +494,15 @@
         }
     }
 
+    // objectTable always empty for now. Will be populated from `data` soon.
+    std::vector<uint32_t> objectTable;
+    Span<const uint32_t> objectTableSpan = {objectTable.data(), objectTable.size()};
+
     uint32_t bodySize;
     LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(sizeof(RpcWireTransaction), data.dataSize(),
-                                               &bodySize),
+                                               &bodySize) ||
+                                __builtin_add_overflow(objectTableSpan.byteSize(), bodySize,
+                                                       &bodySize),
                         "Too much data %zu", data.dataSize());
     RpcWireHeader command{
             .command = RPC_COMMAND_TRANSACT,
@@ -507,6 +514,8 @@
             .code = code,
             .flags = flags,
             .asyncNumber = asyncNumber,
+            // bodySize didn't overflow => this cast is safe
+            .parcelDataSize = static_cast<uint32_t>(data.dataSize()),
     };
 
     constexpr size_t kWaitMaxUs = 1000000;
@@ -521,6 +530,7 @@
             {&command, sizeof(RpcWireHeader)},
             {&transaction, sizeof(RpcWireTransaction)},
             {const_cast<uint8_t*>(data.data()), data.dataSize()},
+            objectTableSpan.toIovec(),
     };
     if (status_t status = rpcSend(connection, session, "transaction", iovs, arraysize(iovs),
                                   [&] {
@@ -585,7 +595,9 @@
             return status;
     }
 
-    if (command.bodySize < sizeof(RpcWireReply)) {
+    const size_t rpcReplyWireSize = RpcWireReply::wireSize(session->getProtocolVersion().value());
+
+    if (command.bodySize < rpcReplyWireSize) {
         ALOGE("Expecting %zu but got %" PRId32 " bytes for RpcWireReply. Terminating!",
               sizeof(RpcWireReply), command.bodySize);
         (void)session->shutdownAndWait(false);
@@ -593,11 +605,13 @@
     }
 
     RpcWireReply rpcReply;
-    CommandData data(command.bodySize - sizeof(RpcWireReply));
+    memset(&rpcReply, 0, sizeof(RpcWireReply)); // zero because of potential short read
+
+    CommandData data(command.bodySize - rpcReplyWireSize);
     if (!data.valid()) return NO_MEMORY;
 
     iovec iovs[]{
-            {&rpcReply, sizeof(RpcWireReply)},
+            {&rpcReply, rpcReplyWireSize},
             {data.data(), data.size()},
     };
     if (status_t status = rpcRec(connection, session, "reply body", iovs, arraysize(iovs));
@@ -605,11 +619,15 @@
         return status;
     if (rpcReply.status != OK) return rpcReply.status;
 
-    uint8_t* parcelData = data.data();
-    size_t parcelDataSize = data.size();
-    data.release();
-    reply->rpcSetDataReference(session, parcelData, parcelDataSize, cleanup_reply_data);
+    Span<const uint8_t> parcelSpan = {data.data(), data.size()};
+    if (session->getProtocolVersion().value() >=
+        RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE) {
+        Span<const uint8_t> objectTableBytes = parcelSpan.splitOff(rpcReply.parcelDataSize);
+        LOG_ALWAYS_FATAL_IF(objectTableBytes.size > 0, "Non-empty object table not supported yet.");
+    }
 
+    data.release();
+    reply->rpcSetDataReference(session, parcelSpan.data, parcelSpan.size, cleanup_reply_data);
     return OK;
 }
 
@@ -824,12 +842,22 @@
     reply.markForRpc(session);
 
     if (replyStatus == OK) {
+        Span<const uint8_t> parcelSpan = {transaction->data,
+                                          transactionData.size() -
+                                                  offsetof(RpcWireTransaction, data)};
+        if (session->getProtocolVersion().value() >=
+            RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE) {
+            Span<const uint8_t> objectTableBytes = parcelSpan.splitOff(transaction->parcelDataSize);
+            LOG_ALWAYS_FATAL_IF(objectTableBytes.size > 0,
+                                "Non-empty object table not supported yet.");
+        }
+
         Parcel data;
         // transaction->data is owned by this function. Parcel borrows this data and
         // only holds onto it for the duration of this function call. Parcel will be
         // deleted before the 'transactionData' object.
-        data.rpcSetDataReference(session, transaction->data,
-                                 transactionData.size() - offsetof(RpcWireTransaction, data),
+
+        data.rpcSetDataReference(session, parcelSpan.data, parcelSpan.size,
                                  do_nothing_to_transact_data);
 
         if (target) {
@@ -941,8 +969,16 @@
         replyStatus = flushExcessBinderRefs(session, addr, target);
     }
 
+    const size_t rpcReplyWireSize = RpcWireReply::wireSize(session->getProtocolVersion().value());
+
+    // objectTable always empty for now. Will be populated from `reply` soon.
+    std::vector<uint32_t> objectTable;
+    Span<const uint32_t> objectTableSpan = {objectTable.data(), objectTable.size()};
+
     uint32_t bodySize;
-    LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(sizeof(RpcWireReply), reply.dataSize(), &bodySize),
+    LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(rpcReplyWireSize, reply.dataSize(), &bodySize) ||
+                                __builtin_add_overflow(objectTableSpan.byteSize(), bodySize,
+                                                       &bodySize),
                         "Too much data for reply %zu", reply.dataSize());
     RpcWireHeader cmdReply{
             .command = RPC_COMMAND_REPLY,
@@ -950,12 +986,17 @@
     };
     RpcWireReply rpcReply{
             .status = replyStatus,
+            // NOTE: Not necessarily written to socket depending on session
+            // version.
+            // NOTE: bodySize didn't overflow => this cast is safe
+            .parcelDataSize = static_cast<uint32_t>(reply.dataSize()),
+            .reserved = {0, 0, 0},
     };
-
     iovec iovs[]{
             {&cmdReply, sizeof(RpcWireHeader)},
-            {&rpcReply, sizeof(RpcWireReply)},
+            {&rpcReply, rpcReplyWireSize},
             {const_cast<uint8_t*>(reply.data()), reply.dataSize()},
+            objectTableSpan.toIovec(),
     };
     return rpcSend(connection, session, "reply", iovs, arraysize(iovs), std::nullopt);
 }
diff --git a/libs/binder/RpcWireFormat.h b/libs/binder/RpcWireFormat.h
index d9b5ca0..7e2aa79 100644
--- a/libs/binder/RpcWireFormat.h
+++ b/libs/binder/RpcWireFormat.h
@@ -131,7 +131,10 @@
 
     uint64_t asyncNumber;
 
-    uint32_t reserved[4];
+    // The size of the Parcel data directly following RpcWireTransaction.
+    uint32_t parcelDataSize;
+
+    uint32_t reserved[3];
 
     uint8_t data[];
 };
@@ -139,8 +142,23 @@
 
 struct RpcWireReply {
     int32_t status; // transact return
+
+    // -- Fields below only transmitted starting at protocol version 1 --
+
+    // The size of the Parcel data directly following RpcWireReply.
+    uint32_t parcelDataSize;
+
+    uint32_t reserved[3];
+
+    // Byte size of RpcWireReply in the wire protocol.
+    static size_t wireSize(uint32_t protocolVersion) {
+        if (protocolVersion == 0) {
+            return sizeof(int32_t);
+        }
+        return sizeof(RpcWireReply);
+    }
 };
-static_assert(sizeof(RpcWireReply) == 4);
+static_assert(sizeof(RpcWireReply) == 20);
 
 #pragma clang diagnostic pop
 
diff --git a/libs/binder/Utils.h b/libs/binder/Utils.h
index 150d520..7dcb70e 100644
--- a/libs/binder/Utils.h
+++ b/libs/binder/Utils.h
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-#include <cstdint>
 #include <stddef.h>
+#include <cstdint>
+#include <optional>
 
 #include <android-base/result.h>
 #include <android-base/unique_fd.h>
@@ -39,4 +40,26 @@
 
 status_t getRandomBytes(uint8_t* data, size_t size);
 
+// View of contiguous sequence. Similar to std::span.
+template <typename T>
+struct Span {
+    T* data = nullptr;
+    size_t size = 0;
+
+    size_t byteSize() { return size * sizeof(T); }
+
+    iovec toIovec() { return {const_cast<std::remove_const_t<T>*>(data), byteSize()}; }
+
+    // Truncates `this` to a length of `offset` and returns a span with the
+    // remainder.
+    //
+    // Aborts if offset > size.
+    Span<T> splitOff(size_t offset) {
+        LOG_ALWAYS_FATAL_IF(offset > size);
+        Span<T> rest = {data + offset, size - offset};
+        size = offset;
+        return rest;
+    }
+};
+
 }   // namespace android
diff --git a/libs/binder/include/binder/RpcSession.h b/libs/binder/include/binder/RpcSession.h
index cb81584..e76b140 100644
--- a/libs/binder/include/binder/RpcSession.h
+++ b/libs/binder/include/binder/RpcSession.h
@@ -38,7 +38,13 @@
 
 constexpr uint32_t RPC_WIRE_PROTOCOL_VERSION_NEXT = 1;
 constexpr uint32_t RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL = 0xF0000000;
-constexpr uint32_t RPC_WIRE_PROTOCOL_VERSION = 0;
+constexpr uint32_t RPC_WIRE_PROTOCOL_VERSION = RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL;
+
+// Starting with this version:
+//
+// * RpcWireReply is larger (4 bytes -> 20).
+// * RpcWireTransaction and RpcWireReplyV1 include the parcel data size.
+constexpr uint32_t RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE = 1;
 
 /**
  * This represents a session (group of connections) between a client
diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 4977c63..5161469 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -99,17 +99,19 @@
     EXPECT_DEATH(p.markForBinder(sp<BBinder>::make()), "");
 }
 
-class BinderRpcSimple : public ::testing::TestWithParam<RpcSecurity> {
+class BinderRpcServerOnly : public ::testing::TestWithParam<std::tuple<RpcSecurity, uint32_t>> {
 public:
     static std::string PrintTestParam(const ::testing::TestParamInfo<ParamType>& info) {
-        return newFactory(info.param)->toCString();
+        return std::string(newFactory(std::get<0>(info.param))->toCString()) + "_serverV" +
+                std::to_string(std::get<1>(info.param));
     }
 };
 
-TEST_P(BinderRpcSimple, SetExternalServerTest) {
+TEST_P(BinderRpcServerOnly, SetExternalServerTest) {
     base::unique_fd sink(TEMP_FAILURE_RETRY(open("/dev/null", O_RDWR)));
     int sinkFd = sink.get();
-    auto server = RpcServer::make(newFactory(GetParam()));
+    auto server = RpcServer::make(newFactory(std::get<0>(GetParam())));
+    server->setProtocolVersion(std::get<1>(GetParam()));
     ASSERT_FALSE(server->hasServer());
     ASSERT_EQ(OK, server->setupExternalServer(std::move(sink)));
     ASSERT_TRUE(server->hasServer());
@@ -480,7 +482,8 @@
     return serverFd;
 }
 
-class BinderRpc : public ::testing::TestWithParam<std::tuple<SocketType, RpcSecurity>> {
+class BinderRpc
+      : public ::testing::TestWithParam<std::tuple<SocketType, RpcSecurity, uint32_t, uint32_t>> {
 public:
     struct Options {
         size_t numThreads = 1;
@@ -490,8 +493,9 @@
     };
 
     static inline std::string PrintParamInfo(const testing::TestParamInfo<ParamType>& info) {
-        auto [type, security] = info.param;
-        return PrintToString(type) + "_" + newFactory(security)->toCString();
+        auto [type, security, clientVersion, serverVersion] = info.param;
+        return PrintToString(type) + "_" + newFactory(security)->toCString() + "_clientV" +
+                std::to_string(clientVersion) + "_serverV" + std::to_string(serverVersion);
     }
 
     static inline void writeString(android::base::borrowed_fd fd, std::string_view str) {
@@ -533,16 +537,19 @@
 
         SocketType socketType = std::get<0>(GetParam());
         RpcSecurity rpcSecurity = std::get<1>(GetParam());
+        uint32_t clientVersion = std::get<2>(GetParam());
+        uint32_t serverVersion = std::get<3>(GetParam());
 
         unsigned int vsockPort = allocateVsockPort();
         std::string addr = allocateSocketAddress();
 
         auto ret = ProcessSession{
-                .host = Process([&](android::base::borrowed_fd writeEnd,
+                .host = Process([=](android::base::borrowed_fd writeEnd,
                                     android::base::borrowed_fd readEnd) {
                     auto certVerifier = std::make_shared<RpcCertificateVerifierSimple>();
                     sp<RpcServer> server = RpcServer::make(newFactory(rpcSecurity, certVerifier));
 
+                    server->setProtocolVersion(serverVersion);
                     server->setMaxThreads(options.numThreads);
 
                     unsigned int outPort = 0;
@@ -618,6 +625,7 @@
         status_t status;
 
         for (const auto& session : sessions) {
+            CHECK(session->setProtocolVersion(clientVersion));
             session->setMaxIncomingThreads(options.numIncomingConnections);
             session->setMaxOutgoingThreads(options.numOutgoingConnections);
 
@@ -1420,9 +1428,20 @@
     return ret;
 }
 
+static std::vector<uint32_t> testVersions() {
+    std::vector<uint32_t> versions;
+    for (size_t i = 0; i < RPC_WIRE_PROTOCOL_VERSION_NEXT; i++) {
+        versions.push_back(i);
+    }
+    versions.push_back(RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL);
+    return versions;
+}
+
 INSTANTIATE_TEST_CASE_P(PerSocket, BinderRpc,
                         ::testing::Combine(::testing::ValuesIn(testSocketTypes()),
-                                           ::testing::ValuesIn(RpcSecurityValues())),
+                                           ::testing::ValuesIn(RpcSecurityValues()),
+                                           ::testing::ValuesIn(testVersions()),
+                                           ::testing::ValuesIn(testVersions())),
                         BinderRpc::PrintParamInfo);
 
 class BinderRpcServerRootObject
@@ -1476,9 +1495,10 @@
     bool mValue = false;
 };
 
-TEST_P(BinderRpcSimple, Shutdown) {
+TEST_P(BinderRpcServerOnly, Shutdown) {
     auto addr = allocateSocketAddress();
-    auto server = RpcServer::make(newFactory(GetParam()));
+    auto server = RpcServer::make(newFactory(std::get<0>(GetParam())));
+    server->setProtocolVersion(std::get<1>(GetParam()));
     ASSERT_EQ(OK, server->setupUnixDomainServer(addr.c_str()));
     auto joinEnds = std::make_shared<OneOffSignal>();
 
@@ -1548,12 +1568,17 @@
     ASSERT_EQ(OK, rpcBinder->pingBinder());
 }
 
-INSTANTIATE_TEST_CASE_P(BinderRpc, BinderRpcSimple, ::testing::ValuesIn(RpcSecurityValues()),
-                        BinderRpcSimple::PrintTestParam);
+INSTANTIATE_TEST_CASE_P(BinderRpc, BinderRpcServerOnly,
+                        ::testing::Combine(::testing::ValuesIn(RpcSecurityValues()),
+                                           ::testing::ValuesIn(testVersions())),
+                        BinderRpcServerOnly::PrintTestParam);
 
 class RpcTransportTestUtils {
 public:
-    using Param = std::tuple<SocketType, RpcSecurity, std::optional<RpcCertificateFormat>>;
+    // Only parameterized only server version because `RpcSession` is bypassed
+    // in the client half of the tests.
+    using Param =
+            std::tuple<SocketType, RpcSecurity, std::optional<RpcCertificateFormat>, uint32_t>;
     using ConnectToServer = std::function<base::unique_fd()>;
 
     // A server that handles client socket connections.
@@ -1565,8 +1590,9 @@
         [[nodiscard]] AssertionResult setUp(
                 const Param& param,
                 std::unique_ptr<RpcAuth> auth = std::make_unique<RpcAuthSelfSigned>()) {
-            auto [socketType, rpcSecurity, certificateFormat] = param;
+            auto [socketType, rpcSecurity, certificateFormat, serverVersion] = param;
             auto rpcServer = RpcServer::make(newFactory(rpcSecurity));
+            rpcServer->setProtocolVersion(serverVersion);
             switch (socketType) {
                 case SocketType::PRECONNECTED: {
                     return AssertionFailure() << "Not supported by this test";
@@ -1696,7 +1722,8 @@
         explicit Client(ConnectToServer connectToServer) : mConnectToServer(connectToServer) {}
         Client(Client&&) = default;
         [[nodiscard]] AssertionResult setUp(const Param& param) {
-            auto [socketType, rpcSecurity, certificateFormat] = param;
+            auto [socketType, rpcSecurity, certificateFormat, serverVersion] = param;
+            (void)serverVersion;
             mFdTrigger = FdTrigger::make();
             mCtx = newFactory(rpcSecurity, mCertVerifier)->newClientCtx();
             if (mCtx == nullptr) return AssertionFailure() << "newClientCtx";
@@ -1767,23 +1794,28 @@
     using Server = RpcTransportTestUtils::Server;
     using Client = RpcTransportTestUtils::Client;
     static inline std::string PrintParamInfo(const testing::TestParamInfo<ParamType>& info) {
-        auto [socketType, rpcSecurity, certificateFormat] = info.param;
+        auto [socketType, rpcSecurity, certificateFormat, serverVersion] = info.param;
         auto ret = PrintToString(socketType) + "_" + newFactory(rpcSecurity)->toCString();
         if (certificateFormat.has_value()) ret += "_" + PrintToString(*certificateFormat);
+        ret += "_serverV" + std::to_string(serverVersion);
         return ret;
     }
     static std::vector<ParamType> getRpcTranportTestParams() {
         std::vector<ParamType> ret;
-        for (auto socketType : testSocketTypes(false /* hasPreconnected */)) {
-            for (auto rpcSecurity : RpcSecurityValues()) {
-                switch (rpcSecurity) {
-                    case RpcSecurity::RAW: {
-                        ret.emplace_back(socketType, rpcSecurity, std::nullopt);
-                    } break;
-                    case RpcSecurity::TLS: {
-                        ret.emplace_back(socketType, rpcSecurity, RpcCertificateFormat::PEM);
-                        ret.emplace_back(socketType, rpcSecurity, RpcCertificateFormat::DER);
-                    } break;
+        for (auto serverVersion : testVersions()) {
+            for (auto socketType : testSocketTypes(false /* hasPreconnected */)) {
+                for (auto rpcSecurity : RpcSecurityValues()) {
+                    switch (rpcSecurity) {
+                        case RpcSecurity::RAW: {
+                            ret.emplace_back(socketType, rpcSecurity, std::nullopt, serverVersion);
+                        } break;
+                        case RpcSecurity::TLS: {
+                            ret.emplace_back(socketType, rpcSecurity, RpcCertificateFormat::PEM,
+                                             serverVersion);
+                            ret.emplace_back(socketType, rpcSecurity, RpcCertificateFormat::DER,
+                                             serverVersion);
+                        } break;
+                    }
                 }
             }
         }
@@ -1791,7 +1823,8 @@
     }
     template <typename A, typename B>
     status_t trust(const A& a, const B& b) {
-        auto [socketType, rpcSecurity, certificateFormat] = GetParam();
+        auto [socketType, rpcSecurity, certificateFormat, serverVersion] = GetParam();
+        (void)serverVersion;
         return RpcTransportTestUtils::trust(rpcSecurity, certificateFormat, a, b);
     }
 };
@@ -1827,7 +1860,8 @@
 }
 
 TEST_P(RpcTransportTest, UntrustedServer) {
-    auto [socketType, rpcSecurity, certificateFormat] = GetParam();
+    auto [socketType, rpcSecurity, certificateFormat, serverVersion] = GetParam();
+    (void)serverVersion;
 
     auto untrustedServer = std::make_unique<Server>();
     ASSERT_TRUE(untrustedServer->setUp(GetParam()));
@@ -1845,7 +1879,9 @@
     client.run(handshakeOk);
 }
 TEST_P(RpcTransportTest, MaliciousServer) {
-    auto [socketType, rpcSecurity, certificateFormat] = GetParam();
+    auto [socketType, rpcSecurity, certificateFormat, serverVersion] = GetParam();
+    (void)serverVersion;
+
     auto validServer = std::make_unique<Server>();
     ASSERT_TRUE(validServer->setUp(GetParam()));
 
@@ -1868,7 +1904,9 @@
 }
 
 TEST_P(RpcTransportTest, UntrustedClient) {
-    auto [socketType, rpcSecurity, certificateFormat] = GetParam();
+    auto [socketType, rpcSecurity, certificateFormat, serverVersion] = GetParam();
+    (void)serverVersion;
+
     auto server = std::make_unique<Server>();
     ASSERT_TRUE(server->setUp(GetParam()));
 
@@ -1887,7 +1925,9 @@
 }
 
 TEST_P(RpcTransportTest, MaliciousClient) {
-    auto [socketType, rpcSecurity, certificateFormat] = GetParam();
+    auto [socketType, rpcSecurity, certificateFormat, serverVersion] = GetParam();
+    (void)serverVersion;
+
     auto server = std::make_unique<Server>();
     ASSERT_TRUE(server->setUp(GetParam()));
 
@@ -1973,23 +2013,24 @@
                         RpcTransportTest::PrintParamInfo);
 
 class RpcTransportTlsKeyTest
-      : public testing::TestWithParam<std::tuple<SocketType, RpcCertificateFormat, RpcKeyFormat>> {
+      : public testing::TestWithParam<
+                std::tuple<SocketType, RpcCertificateFormat, RpcKeyFormat, uint32_t>> {
 public:
     template <typename A, typename B>
     status_t trust(const A& a, const B& b) {
-        auto [socketType, certificateFormat, keyFormat] = GetParam();
+        auto [socketType, certificateFormat, keyFormat, serverVersion] = GetParam();
+        (void)serverVersion;
         return RpcTransportTestUtils::trust(RpcSecurity::TLS, certificateFormat, a, b);
     }
     static std::string PrintParamInfo(const testing::TestParamInfo<ParamType>& info) {
-        auto [socketType, certificateFormat, keyFormat] = info.param;
-        auto ret = PrintToString(socketType) + "_certificate_" + PrintToString(certificateFormat) +
-                "_key_" + PrintToString(keyFormat);
-        return ret;
+        auto [socketType, certificateFormat, keyFormat, serverVersion] = info.param;
+        return PrintToString(socketType) + "_certificate_" + PrintToString(certificateFormat) +
+                "_key_" + PrintToString(keyFormat) + "_serverV" + std::to_string(serverVersion);
     };
 };
 
 TEST_P(RpcTransportTlsKeyTest, PreSignedCertificate) {
-    auto [socketType, certificateFormat, keyFormat] = GetParam();
+    auto [socketType, certificateFormat, keyFormat, serverVersion] = GetParam();
 
     std::vector<uint8_t> pkeyData, certData;
     {
@@ -2004,8 +2045,8 @@
     auto desPkey = deserializeUnencryptedPrivatekey(pkeyData, keyFormat);
     auto desCert = deserializeCertificate(certData, certificateFormat);
     auto auth = std::make_unique<RpcAuthPreSigned>(std::move(desPkey), std::move(desCert));
-    auto utilsParam =
-            std::make_tuple(socketType, RpcSecurity::TLS, std::make_optional(certificateFormat));
+    auto utilsParam = std::make_tuple(socketType, RpcSecurity::TLS,
+                                      std::make_optional(certificateFormat), serverVersion);
 
     auto server = std::make_unique<RpcTransportTestUtils::Server>();
     ASSERT_TRUE(server->setUp(utilsParam, std::move(auth)));
@@ -2024,7 +2065,8 @@
         BinderRpc, RpcTransportTlsKeyTest,
         testing::Combine(testing::ValuesIn(testSocketTypes(false /* hasPreconnected*/)),
                          testing::Values(RpcCertificateFormat::PEM, RpcCertificateFormat::DER),
-                         testing::Values(RpcKeyFormat::PEM, RpcKeyFormat::DER)),
+                         testing::Values(RpcKeyFormat::PEM, RpcKeyFormat::DER),
+                         testing::ValuesIn(testVersions())),
         RpcTransportTlsKeyTest::PrintParamInfo);
 
 } // namespace android
diff --git a/libs/binder/tests/binderRpcWireProtocolTest.cpp b/libs/binder/tests/binderRpcWireProtocolTest.cpp
index 4fcf42d..3dab2c7 100644
--- a/libs/binder/tests/binderRpcWireProtocolTest.cpp
+++ b/libs/binder/tests/binderRpcWireProtocolTest.cpp
@@ -233,11 +233,15 @@
         "0100000025000000|03000000|00000000|ffffffff|03000000|00000000|00000000|"
         "07000000020000003a0044000000000000000000|f8ffffff020000003a002f00000000000000000008000000";
 
+TEST(RpcWire, V0) {
+    checkRepr(kCurrentRepr, 0);
+}
+
 TEST(RpcWire, CurrentVersion) {
     checkRepr(kCurrentRepr, RPC_WIRE_PROTOCOL_VERSION);
 }
 
-static_assert(RPC_WIRE_PROTOCOL_VERSION == 0,
+static_assert(RPC_WIRE_PROTOCOL_VERSION == RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL,
               "If the binder wire protocol is updated, this test should test additional versions. "
               "The binder wire protocol should only be updated on upstream AOSP.");