diff --git a/.licenserc.yaml b/.licenserc.yaml
index e28f4228..f0025d22 100644
--- a/.licenserc.yaml
+++ b/.licenserc.yaml
@@ -36,6 +36,7 @@ header: # <1>
     - 'LICENSE'
     - 'NOTICE'
     - '.bazelversion'
+    - '.bazelignore'
     - '.clang-format'
     - '.gitattributes'
     - '.gitignore'
diff --git a/heu/experimental/tfhe/src/BUILD.bazel b/heu/experimental/tfhe/src/BUILD.bazel
index 9db267f9..7e43a9b5 100644
--- a/heu/experimental/tfhe/src/BUILD.bazel
+++ b/heu/experimental/tfhe/src/BUILD.bazel
@@ -12,10 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@rules_cc//cc:defs.bzl", "cc_library")
 load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_static_library")
 load("//third_party/bazel_rust/cargo:crates.bzl", "all_crate_deps")
 load("//third_party/bazel_rust/cargo:rust_cxx_bridge.bzl", "rust_cxx_bridge")
+load("@rules_cc//cc:defs.bzl", "cc_library")
 
 package(default_visibility = ["//visibility:public"])
 
diff --git a/heu/library/algorithms/paillier_zahlen/public_key.cc b/heu/library/algorithms/paillier_zahlen/public_key.cc
index a50670eb..02b48079 100644
--- a/heu/library/algorithms/paillier_zahlen/public_key.cc
+++ b/heu/library/algorithms/paillier_zahlen/public_key.cc
@@ -45,5 +45,4 @@ std::string PublicKey::ToString() const {
       n_.ToHexString(), n_.BitCount(), h_s_.ToHexString(),
       PlaintextBound().ToHexString(), PlaintextBound().BitCount());
 }
-
 }  // namespace heu::lib::algorithms::paillier_z
diff --git a/heu/library/phe/base/serializable_types.cc b/heu/library/phe/base/serializable_types.cc
index ef888044..151ac1f5 100644
--- a/heu/library/phe/base/serializable_types.cc
+++ b/heu/library/phe/base/serializable_types.cc
@@ -58,12 +58,13 @@ yacl::Buffer SerializableVariant<Types...>::Serialize(bool with_meta) const {
       }
     }
   });
-  uint8_t idx = GetAlignedIdx();
+  size_t idx = GetAlignedIdx();  // Cast `idx` to `size_t` for compatibility
+                                 // with older versions
 
   // Append idx to the end of payload to reduce memory copying
   auto payload_sz = payload.size();
   payload.resize(static_cast<int64_t>(payload_sz + sizeof(idx)));
-  *reinterpret_cast<uint8_t *>(payload.data<uint8_t>() + payload_sz) = idx;
+  *reinterpret_cast<size_t *>(payload.data<uint8_t>() + payload_sz) = idx;
   return payload;
 }
 
@@ -111,12 +112,11 @@ void SerializableVariant<HE_PLAINTEXT_TYPES>::EmplaceInstance(
 
 template <typename... Types>
 void SerializableVariant<Types...>::Deserialize(yacl::ByteContainerView in) {
-  YACL_ENFORCE(in.size() > sizeof(uint8_t), "Illegal buffer size {}",
-               in.size());
+  YACL_ENFORCE(in.size() > sizeof(size_t), "Illegal buffer size {}", in.size());
 
-  uint8_t idx = *reinterpret_cast<const uint8_t *>(in.data() + in.size() -
-                                                   sizeof(uint8_t));
-  yacl::ByteContainerView payload(in.data(), in.size() - sizeof(uint8_t));
+  uint8_t idx =
+      *reinterpret_cast<const size_t *>(in.data() + in.size() - sizeof(size_t));
+  yacl::ByteContainerView payload(in.data(), in.size() - sizeof(size_t));
 
   EmplaceInstance(idx);
   Visit([&](auto &clazz) { FOR_EACH_TYPE(clazz) clazz.Deserialize(payload); });
diff --git a/heu/library/phe/phe_test/ser_test.cc b/heu/library/phe/phe_test/ser_test.cc
index 6a85fb8c..9afc8bee 100644
--- a/heu/library/phe/phe_test/ser_test.cc
+++ b/heu/library/phe/phe_test/ser_test.cc
@@ -82,7 +82,7 @@ TEST_P(SerTest, VarSerialize) {
   EXPECT_NE(ct0, Ciphertext());
   EXPECT_NE(ct0, Ciphertext(he_kit_.GetSchemaType()));
   buffer = ct0.Serialize();
-  EXPECT_GT(buffer.size(), sizeof(uint8_t)) << buffer;
+  EXPECT_GT(buffer.size(), sizeof(size_t)) << buffer;
 
   Ciphertext ct1;
   ct1.Deserialize(buffer);
diff --git a/heu/pylib/numpy_binding/BUILD.bazel b/heu/pylib/numpy_binding/BUILD.bazel
index 7505ded7..423b2429 100644
--- a/heu/pylib/numpy_binding/BUILD.bazel
+++ b/heu/pylib/numpy_binding/BUILD.bazel
@@ -12,8 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@pybind11_bazel//:build_defs.bzl", "pybind_extension", "pybind_library")
 load("@yacl//bazel:yacl.bzl", "yacl_cc_library", "yacl_cc_test")
+load("@pybind11_bazel//:build_defs.bzl", "pybind_extension", "pybind_library")
 
 package(default_visibility = ["//visibility:public"])
 
diff --git a/heu/pylib/version.py b/heu/pylib/version.py
index d9956c19..cf3c182c 100644
--- a/heu/pylib/version.py
+++ b/heu/pylib/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 
 
-__version__ = "0.6.0.dev20241015"
+__version__ = "0.6.0.dev20241106"