diff --git a/raven/includes/serialization/deserialization_impl.hpp b/raven/includes/serialization/deserialization_impl.hpp
index f71d93a..e70e191 100644
--- a/raven/includes/serialization/deserialization_impl.hpp
+++ b/raven/includes/serialization/deserialization_impl.hpp
@@ -348,4 +348,30 @@ deserialize(rvn::SubscribeErrorMessage& subscribeErrorMessage, ConstSpan& span,
     return deserializedBytes;
 }
 
+template <typename ConstSpan>
+static inline deserialize_return_t
+deserialize(rvn::SubscribeUpdateMessage& subscribeUpdateMessage, ConstSpan& span, NetworkEndian = network_endian)
+{
+    std::uint64_t deserializedBytes = 0;
+
+    deserializedBytes +=
+    deserialize<ds::quic_var_int>(subscribeUpdateMessage.requestId_, span);
+
+    deserializedBytes +=
+    deserialize<ds::quic_var_int>(subscribeUpdateMessage.startLocation_.group_.get(), span);
+    deserializedBytes +=
+    deserialize<ds::quic_var_int>(subscribeUpdateMessage.startLocation_.object_.get(), span);
+
+    deserializedBytes +=
+    deserialize<ds::quic_var_int>(subscribeUpdateMessage.endGroup_, span);
+    deserializedBytes +=
+    deserialize_trivial<std::uint8_t>(subscribeUpdateMessage.subscriberPriority_, span);
+    deserializedBytes +=
+    deserialize_trivial<std::uint8_t>(subscribeUpdateMessage.forward_, span);
+
+    deserializedBytes += deserialize_params(subscribeUpdateMessage.parameters_, span);
+
+    return deserializedBytes;
+}
+
 } // namespace rvn::serialization::detail
diff --git a/raven/includes/serialization/messages.hpp b/raven/includes/serialization/messages.hpp
index 56f40e0..c83f9bf 100644
--- a/raven/includes/serialization/messages.hpp
+++ b/raven/includes/serialization/messages.hpp
@@ -369,14 +369,44 @@ struct GoAwayMessage
       Subscribe Parameters (..) ...
     }
 */
-struct SubscribeUpdateMessage
+struct SubscribeUpdateMessage : public ControlMessageBase<SubscribeUpdateMessage>
 {
-    iType subscribeId;
-    iType trackAlias;
-    iType group;
-    iType object;
-    // iType numberOfParameters;
-    std::vector<Parameter> params;
+    std::uint64_t requestId_;
+    GroupObjectPair startLocation_;
+    std::uint64_t endGroup_;
+    std::uint8_t subscriberPriority_;
+    std::uint8_t forward_;
+    std::vector<Parameter> parameters_;
+
+    SubscribeUpdateMessage() : ControlMessageBase(MoQtMessageType::SUBSCRIBE_UPDATE)
+    {
+    }
+
+    bool operator==(const SubscribeUpdateMessage& rhs) const
+    {
+        bool isEqual = true;
+
+        isEqual &= requestId_ == rhs.requestId_;
+        isEqual &= endGroup_ == rhs.endGroup_;
+        isEqual &= subscriberPriority_ == rhs.subscriberPriority_;
+        isEqual &= forward_== rhs.forward_;
+        isEqual &= parameters_ == rhs.parameters_;
+        isEqual &= startLocation_ == rhs.startLocation_;
+
+        return isEqual;
+    }
+
+    friend inline std::ostream& operator<<(std::ostream& os, const SubscribeUpdateMessage& msg)
+    {
+        os << "RequestId: " << msg.requestId_
+        << " Location: " << std::to_string(msg.startLocation_.group_.get()) + " " + std::to_string(msg.startLocation_.object_.get()) 
+        << " EndGroup: " << msg.endGroup_ << " SubscriberPriority: " << msg.subscriberPriority_
+        << " Forward: " << msg.forward_
+        << " Parameters: ";
+        for (const auto& parameter : msg.parameters_)
+            os << parameter;
+        return os;
+    }
 };
 
 /*
diff --git a/raven/includes/serialization/serialization_impl.hpp b/raven/includes/serialization/serialization_impl.hpp
index ccee361..eacb14f 100644
--- a/raven/includes/serialization/serialization_impl.hpp
+++ b/raven/includes/serialization/serialization_impl.hpp
@@ -143,6 +143,7 @@ template <UnsignedInteger T>
  serialize_return_t serialize(ds::chunk& c, const StreamHeaderSubgroupObject& msg);
  serialize_return_t serialize(ds::chunk& c, const rvn::SubscribeErrorMessage& subscribeErrorMessage);
  serialize_return_t serialize(ds::chunk& c, const rvn::BatchSubscribeMessage& batchSubscribeMessage);
+ serialize_return_t serialize(ds::chunk& c, const rvn::SubscribeUpdateMessage& subscribeUpdateMessage);
 ///////////////////////////////////////////////////////////////////////////////////////////////
 // clang-format on
 } // namespace rvn::serialization::detail
diff --git a/raven/src/serialization_impl.cpp b/raven/src/serialization_impl.cpp
index 4c07fe0..b8b0f89 100644
--- a/raven/src/serialization_impl.cpp
+++ b/raven/src/serialization_impl.cpp
@@ -306,4 +306,37 @@ serialize(ds::chunk& c, const rvn::BatchSubscribeMessage& batchSubscribeMessage)
 
     return headerLen + msgLen;
 }
+
+serialize_return_t
+serialize(ds::chunk& c, const rvn::SubscribeUpdateMessage& subscribeUpdateMessage)
+{
+    std::uint64_t msgLen = 0;
+    {
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.requestId_);
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.startLocation_.group_.get());
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.startLocation_.object_.get());
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.endGroup_);
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.subscriberPriority_);
+        msgLen += mock_serialize<std::uint8_t>(subscribeUpdateMessage.forward_);
+        msgLen += mock_serialize<ds::quic_var_int>(subscribeUpdateMessage.parameters_.size());
+        for (const auto& parameter : subscribeUpdateMessage.parameters_)
+            msgLen += mock_serialize(parameter);
+    }
+
+    std::uint64_t headerLen = 0;
+    headerLen +=
+    serialize<ds::quic_var_int>(c, utils::to_underlying(MoQtMessageType::SUBSCRIBE_UPDATE));
+    headerLen += serialize<ds::quic_var_int>(c, msgLen);
+
+    serialize<ds::quic_var_int>(c, subscribeUpdateMessage.requestId_);
+    serialize<ds::quic_var_int>(c, subscribeUpdateMessage.startLocation_.group_.get());
+    serialize<ds::quic_var_int>(c, subscribeUpdateMessage.startLocation_.object_.get());
+    serialize<ds::quic_var_int>(c, subscribeUpdateMessage.endGroup_);
+    serialize<std::uint8_t>(c, subscribeUpdateMessage.subscriberPriority_);
+    serialize<std::uint8_t>(c, subscribeUpdateMessage.forward_);
+    serialize<ds::quic_var_int>(c, subscribeUpdateMessage.parameters_.size());
+    for (const auto& parameter : subscribeUpdateMessage.parameters_)
+        serialize(c, parameter);
+    return headerLen + msgLen;
+}
 } // namespace rvn::serialization::detail
diff --git a/tests/serialization/CMakeLists.txt b/tests/serialization/CMakeLists.txt
index 1df850c..c494c5b 100644
--- a/tests/serialization/CMakeLists.txt
+++ b/tests/serialization/CMakeLists.txt
@@ -5,3 +5,4 @@ add_raven_test(serialize_server_setup_message.cpp)
 add_raven_test(serialize_subscribe_message.cpp)
 add_raven_test(serialize_subscribe_error_message.cpp)
 add_raven_test(serialize_batch_subscribe_message.cpp)
+add_raven_test(serialize_subscribe_update_message.cpp)
diff --git a/tests/serialization/serialize_subscribe_update_message.cpp b/tests/serialization/serialize_subscribe_update_message.cpp
new file mode 100644
index 0000000..30efe42
--- /dev/null
+++ b/tests/serialization/serialize_subscribe_update_message.cpp
@@ -0,0 +1,88 @@
+#include "test_serialization_utils.hpp"
+#include <cassert>
+#include <iostream>
+#include <serialization/chunk.hpp>
+#include <serialization/deserialization_impl.hpp>
+#include <serialization/messages.hpp>
+#include <serialization/serialization_impl.hpp>
+#include <utilities.hpp>
+
+using namespace rvn;
+using namespace rvn::serialization;
+
+void test_serialize_subscribe_error()
+{
+    SubscribeUpdateMessage msg;
+    ds::chunk c;
+    msg.requestId_ = 0x12345678;
+    GroupId group(0x87654321);
+    ObjectId object(0x11111111);
+    msg.startLocation_.group_ = group;
+    msg.startLocation_.object_ = object;
+    msg.endGroup_ = 0;
+    msg.subscriberPriority_ = 255;
+    msg.forward_ = 100;
+    Parameter param;
+    msg.parameters_.push_back(param);
+
+    serialization::detail::serialize(c, msg);
+
+    // clang-format off
+    /*
+            00000010         00011000     10010010 00110100 01010110 01111000        11000000 00000000 00000000 00000000 10000111 01100101 01000011 00100001 
+        [msg type 0x02]    [msg len 18]         [requestId 0x12345678]                                              [groupId 0x87654321]          
+
+         10010001 00010001 00010001 00010001    00000000            11111111              01100100              00000001                  00000011                           
+                [objectId 0x11111111]         [endGroup 0]   [subscriberPriority 255]   [forward 100]   [Number of Parameters 1]   [Parameter Type 0x03]
+
+             00000001           00000000
+        [Parameter Length]    [Timeout 0]
+    
+    */
+    std::string expectedSerializationString = "00000010 00011000 10010010 00110100 01010110 01111000 11000000 00000000 00000000 00000000 10000111 01100101 01000011 00100001 10010001 00010001 00010001 00010001 00000000 11111111 01100100 00000001 00000011 00000001 00000000";
+    // // clang-format on
+    auto expectedSerialization = binary_string_to_vector(expectedSerializationString);
+
+    utils::ASSERT_LOG_THROW(c.size() == expectedSerialization.size(), "Size mismatch\n",
+                            "Expected size: ", expectedSerialization.size(),
+                            "\n", "Actual size: ", c.size(), "\n");
+    for (std::size_t i = 0; i < c.size(); i++)
+        utils::ASSERT_LOG_THROW(c[i] == expectedSerialization[i], "Mismatch at index: ", i,
+                                "\n", "Expected: ", int(expectedSerialization[i]),
+                                "\n", "Actual: ", int(c[i]), "\n");
+
+    ds::ChunkSpan span(c);
+
+    ControlMessageHeader header;
+    serialization::detail::deserialize(header, span);
+
+    utils::ASSERT_LOG_THROW(header.messageType_ == MoQtMessageType::SUBSCRIBE_UPDATE,
+                            "Message type mismatch\n", "Expected: ",
+                            utils::to_underlying(MoQtMessageType::SUBSCRIBE_UPDATE), "\n",
+                            "Actual: ", utils::to_underlying(header.messageType_), "\n");
+
+    SubscribeUpdateMessage deserializedMsg;
+    serialization::detail::deserialize(deserializedMsg, span);
+
+    std::cout << "Deserialization Succesfull !!" << std::endl;
+    utils::ASSERT_LOG_THROW(msg == deserializedMsg, "Deserialization failed\n",
+                            "Expected: ", msg, "\n", "Actual: ", deserializedMsg, "\n");
+}
+
+void tests()
+{
+    try
+    {
+        test_serialize_subscribe_error();
+    }
+    catch (const std::exception& e)
+    {
+        std::cerr << "test failed\n";
+        std::cerr << e.what() << '\n';
+    }
+}
+int main()
+{
+    tests();
+    return 0;
+}
\ No newline at end of file