diff --git a/include/msgpack/v1/adaptor/carray.hpp b/include/msgpack/v1/adaptor/carray.hpp
index 323ece00..8fff4468 100644
--- a/include/msgpack/v1/adaptor/carray.hpp
+++ b/include/msgpack/v1/adaptor/carray.hpp
@@ -169,7 +169,7 @@ struct object_with_zone<char[N]> {
         char const* p2 = static_cast<char const*>(std::memchr(p, '\0', size));
         uint32_t adjusted_size = p2 ? static_cast<uint32_t>(p2 - p) : size;
         o.type = msgpack::type::STR;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(adjusted_size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(adjusted_size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.str.ptr = ptr;
         o.via.str.size = adjusted_size;
         std::memcpy(ptr, p, adjusted_size);
@@ -184,7 +184,7 @@ struct object_with_zone<const char[N]> {
         char const* p2 = static_cast<char const*>(std::memchr(p, '\0', size));
         uint32_t adjusted_size = p2 ? static_cast<uint32_t>(p2 - p) : size;
         o.type = msgpack::type::STR;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(adjusted_size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(adjusted_size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.str.ptr = ptr;
         o.via.str.size = adjusted_size;
         std::memcpy(ptr, p, adjusted_size);
@@ -196,7 +196,7 @@ struct object_with_zone<unsigned char[N]> {
     void operator()(msgpack::object::with_zone& o, const unsigned char(&v)[N]) const {
         uint32_t size = checked_get_container_size(N);
         o.type = msgpack::type::BIN;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.bin.ptr = ptr;
         o.via.bin.size = size;
         std::memcpy(ptr, v, size);
@@ -208,7 +208,7 @@ struct object_with_zone<const unsigned char[N]> {
     void operator()(msgpack::object::with_zone& o, const unsigned char(&v)[N]) const {
         uint32_t size = checked_get_container_size(N);
         o.type = msgpack::type::BIN;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.bin.ptr = ptr;
         o.via.bin.size = size;
         std::memcpy(ptr, v, size);
diff --git a/include/msgpack/v1/adaptor/char_ptr.hpp b/include/msgpack/v1/adaptor/char_ptr.hpp
index 4e6919b8..a405fa3c 100644
--- a/include/msgpack/v1/adaptor/char_ptr.hpp
+++ b/include/msgpack/v1/adaptor/char_ptr.hpp
@@ -41,7 +41,7 @@ struct object_with_zone<const char*> {
     void operator()(msgpack::object::with_zone& o, const char* v) const {
         uint32_t size = checked_get_container_size(std::strlen(v));
         o.type = msgpack::type::STR;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.str.ptr = ptr;
         o.via.str.size = size;
         std::memcpy(ptr, v, size);
diff --git a/include/msgpack/v1/adaptor/cpp11/array_char.hpp b/include/msgpack/v1/adaptor/cpp11/array_char.hpp
index a44c0aff..865e77eb 100644
--- a/include/msgpack/v1/adaptor/cpp11/array_char.hpp
+++ b/include/msgpack/v1/adaptor/cpp11/array_char.hpp
@@ -79,7 +79,7 @@ struct object_with_zone<std::array<char, N>> {
     void operator()(msgpack::object::with_zone& o, const std::array<char, N>& v) const {
         uint32_t size = checked_get_container_size(v.size());
         o.type = msgpack::type::BIN;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.bin.ptr = ptr;
         o.via.bin.size = size;
         std::memcpy(ptr, v.data(), size);
diff --git a/include/msgpack/v1/adaptor/cpp11/array_unsigned_char.hpp b/include/msgpack/v1/adaptor/cpp11/array_unsigned_char.hpp
index 73fcc892..5b35d15f 100644
--- a/include/msgpack/v1/adaptor/cpp11/array_unsigned_char.hpp
+++ b/include/msgpack/v1/adaptor/cpp11/array_unsigned_char.hpp
@@ -79,7 +79,7 @@ struct object_with_zone<std::array<unsigned char, N>> {
     void operator()(msgpack::object::with_zone& o, const std::array<unsigned char, N>& v) const {
         uint32_t size = checked_get_container_size(v.size());
         o.type = msgpack::type::BIN;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.bin.ptr = ptr;
         o.via.bin.size = size;
         std::memcpy(ptr, v.data(), size);
diff --git a/include/msgpack/v1/adaptor/ext.hpp b/include/msgpack/v1/adaptor/ext.hpp
index b81c0bcd..bf4bf57f 100644
--- a/include/msgpack/v1/adaptor/ext.hpp
+++ b/include/msgpack/v1/adaptor/ext.hpp
@@ -104,7 +104,7 @@ struct object_with_zone<msgpack::type::ext> {
         // size limit has already been checked at ext's constructor
         uint32_t size = v.size();
         o.type = msgpack::type::EXT;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size + 1));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size + 1, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.ext.ptr = ptr;
         o.via.ext.size = size;
         ptr[0] = static_cast<char>(v.type());
diff --git a/include/msgpack/v1/adaptor/string.hpp b/include/msgpack/v1/adaptor/string.hpp
index a4ce8a2f..ca7d3e50 100644
--- a/include/msgpack/v1/adaptor/string.hpp
+++ b/include/msgpack/v1/adaptor/string.hpp
@@ -69,7 +69,7 @@ struct object_with_zone<std::string> {
     void operator()(msgpack::object::with_zone& o, const std::string& v) const {
         uint32_t size = checked_get_container_size(v.size());
         o.type = msgpack::type::STR;
-        char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+        char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
         o.via.str.ptr = ptr;
         o.via.str.size = size;
         std::memcpy(ptr, v.data(), v.size());
diff --git a/include/msgpack/v1/adaptor/vector_char.hpp b/include/msgpack/v1/adaptor/vector_char.hpp
index a89d54d2..315dad67 100644
--- a/include/msgpack/v1/adaptor/vector_char.hpp
+++ b/include/msgpack/v1/adaptor/vector_char.hpp
@@ -96,7 +96,7 @@ struct object_with_zone<std::vector<char, Alloc> > {
         o.type = msgpack::type::BIN;
         o.via.bin.size = size;
         if (size != 0) {
-            char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+            char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
             o.via.bin.ptr = ptr;
             std::memcpy(ptr, &v.front(), size);
         }
diff --git a/include/msgpack/v1/adaptor/vector_unsigned_char.hpp b/include/msgpack/v1/adaptor/vector_unsigned_char.hpp
index c79e5748..9db72fe7 100644
--- a/include/msgpack/v1/adaptor/vector_unsigned_char.hpp
+++ b/include/msgpack/v1/adaptor/vector_unsigned_char.hpp
@@ -96,7 +96,7 @@ struct object_with_zone<std::vector<unsigned char, Alloc> > {
         o.type = msgpack::type::BIN;
         o.via.bin.size = size;
         if (size != 0) {
-            char* ptr = static_cast<char*>(o.zone.allocate_align(size));
+            char* ptr = static_cast<char*>(o.zone.allocate_align(size, MSGPACK_ZONE_ALIGNOF(char)));
             o.via.bin.ptr = ptr;
             std::memcpy(ptr, &v.front(), size);
         }
diff --git a/include/msgpack/v1/object.hpp b/include/msgpack/v1/object.hpp
index 6dc072e0..6ea84464 100644
--- a/include/msgpack/v1/object.hpp
+++ b/include/msgpack/v1/object.hpp
@@ -325,7 +325,7 @@ struct object_with_zone<msgpack::object> {
             return;
 
         case msgpack::type::STR: {
-            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.str.size));
+            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.str.size, MSGPACK_ZONE_ALIGNOF(char)));
             o.via.str.ptr = ptr;
             o.via.str.size = v.via.str.size;
             std::memcpy(ptr, v.via.str.ptr, v.via.str.size);
@@ -333,7 +333,7 @@ struct object_with_zone<msgpack::object> {
         }
 
         case msgpack::type::BIN: {
-            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.bin.size));
+            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.bin.size, MSGPACK_ZONE_ALIGNOF(char)));
             o.via.bin.ptr = ptr;
             o.via.bin.size = v.via.bin.size;
             std::memcpy(ptr, v.via.bin.ptr, v.via.bin.size);
@@ -341,7 +341,7 @@ struct object_with_zone<msgpack::object> {
         }
 
         case msgpack::type::EXT: {
-            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.ext.size + 1));
+            char* ptr = static_cast<char*>(o.zone.allocate_align(v.via.ext.size + 1, MSGPACK_ZONE_ALIGNOF(char)));
             o.via.ext.ptr = ptr;
             o.via.ext.size = v.via.ext.size;
             std::memcpy(ptr, v.via.ext.ptr, v.via.ext.size + 1);