diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 120a1c0..41c7eee 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -22,14 +22,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0', '3.3']
+        ruby-version: ['3.2', '3.3', '3.4', '4.0']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby-version }}
-        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+        bundler-cache: true
     - name: Run tests
       run: bundle exec rake
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41d9ff4..9e2763a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
-### master
+### 0.7.0 (August 11, 2025)
+  * Make it compatible with gcc 15 (by [@lemmuh](https://github.com/lemmuh))
+    
+### 0.6.0 (December 19, 2024)
   * Update libxxhash to 0.8.1
+  * Drop old Rubies. Support only MRI 3.1+
+  * Modernize Ruby C API ussage, fix related warnings. (by [@casperisfine](https://github.com/casperisfine) and [@byroot](https://github.com/byroot))
 
 ### 0.5.0 (July 28, 2022)
   * Mark extension as Ractor-safe (by [@kreynolds](https://github.com/kreynolds))
diff --git a/README.md b/README.md
index b61b759..1f6b0c8 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-## xxHash [![Build Status](https://travis-ci.org/nashby/xxhash.png?branch=master)](https://travis-ci.org/nashby/xxhash)
+## xxHash [![Ruby](https://github.com/nashby/xxhash/actions/workflows/ruby.yml/badge.svg)](https://github.com/nashby/xxhash/actions/workflows/ruby.yml)
 
 Ruby wrapper for [xxHash](https://github.com/Cyan4973/xxHash)
 
@@ -37,14 +37,13 @@ XXH64 is also supported: you can use `xxh64`, `xxh64_stream`, `.xxh64_file`.
 
 ### Supported Ruby versions
 
-- MRI 2.3+
-- rbx-19mode
+- MRI 3.1+
 
 Note: It doesn't work on JRuby as it uses C extension.
 
 ### Versioning
 
-Version 0.5.0 is equal to [0.6.2](https://github.com/Cyan4973/xxHash/tree/v0.6.2)
+Version 0.7.0 is equal to [0.8.1](https://github.com/Cyan4973/xxHash/tree/v0.8.1)
 
 ## Contributing
 
@@ -56,5 +55,5 @@ Version 0.5.0 is equal to [0.6.2](https://github.com/Cyan4973/xxHash/tree/v0.6.2
 
 ### Copyright
 
-Copyright (c) 2022 Vasiliy Ermolovich. See LICENSE.txt for
+Copyright (c) 2024 Vasiliy Ermolovich. See LICENSE.txt for
 further details.
diff --git a/ext/xxhash/xxhash.c b/ext/xxhash/xxhash.c
index 82e5ac8..9861f83 100644
--- a/ext/xxhash/xxhash.c
+++ b/ext/xxhash/xxhash.c
@@ -67,13 +67,30 @@ VALUE xxhash_xxh32(VALUE mod, VALUE input, VALUE seed)
   return ULL2NUM(XXH32(StringValuePtr(input), (size_t)RSTRING_LEN(input), (unsigned int)NUM2ULL(seed)));
 }
 
-void xxhash32_streaming_hash_free(xxhash_xxh32_t* storage)
+static void xxhash32_streaming_hash_free(void *ptr)
 {
+  xxhash_xxh32_t* storage = (xxhash_xxh32_t*)ptr;
   // Digest frees the memory.
   XXH32_freeState(storage->state);
   xfree(storage);
 }
 
+static size_t xxhash32_streaming_hash_memsize(const void *ptr)
+{
+  // Ideally we'd include sizeof(XXH32_state_t) too, but the type is opaque.
+  return sizeof(xxhash_xxh32_t);
+}
+
+static const rb_data_type_t xxhash_xxh32_type = {
+    .wrap_struct_name = "xxhash/xxhash32_streaming_hash",
+    .function = {
+        .dmark = NULL,
+        .dfree = xxhash32_streaming_hash_free,
+        .dsize = xxhash32_streaming_hash_memsize,
+    },
+    .flags = RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
 VALUE xxhash32_streaming_hash_new(VALUE klass, VALUE seed)
 {
   XXH_errorcode code;
@@ -86,14 +103,14 @@ VALUE xxhash32_streaming_hash_new(VALUE klass, VALUE seed)
     rb_raise(rb_eRuntimeError, "Error during reset.");
     return Qnil;
   }
-  return Data_Wrap_Struct(klass, 0, xxhash32_streaming_hash_free, storage);
+  return TypedData_Wrap_Struct(klass, &xxhash_xxh32_type, storage);
 }
 
 VALUE xxhash32_streaming_hash_reset(VALUE self)
 {
   XXH_errorcode code;
   xxhash_xxh32_t* storage;
-  Data_Get_Struct(self, xxhash_xxh32_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh32_t, &xxhash_xxh32_type, storage);
 
   code = XXH32_reset(storage->state, storage->seed);
   if(code != XXH_OK) {
@@ -107,7 +124,7 @@ VALUE xxhash32_streaming_hash_update(VALUE self, VALUE data)
 {
   XXH_errorcode code;
   xxhash_xxh32_t* storage;
-  Data_Get_Struct(self, xxhash_xxh32_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh32_t, &xxhash_xxh32_type, storage);
 
   code = XXH32_update(storage->state, StringValuePtr(data), (size_t)RSTRING_LEN(data));
   if(code != XXH_OK) {
@@ -119,7 +136,7 @@ VALUE xxhash32_streaming_hash_update(VALUE self, VALUE data)
 VALUE xxhash32_streaming_hash_digest(VALUE self)
 {
   xxhash_xxh32_t* storage;
-  Data_Get_Struct(self, xxhash_xxh32_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh32_t, &xxhash_xxh32_type, storage);
 
   // Do not free memory now.
   return ULL2NUM(XXH32_digest(storage->state));
@@ -130,13 +147,30 @@ VALUE xxhash_xxh64(VALUE mod, VALUE input, VALUE seed)
   return ULL2NUM(XXH64(StringValuePtr(input), (size_t)RSTRING_LEN(input), (unsigned int)NUM2ULL(seed)));
 }
 
-void xxhash64_streaming_hash_free(xxhash_xxh64_t* storage)
+static void xxhash64_streaming_hash_free(void *ptr)
 {
+  xxhash_xxh64_t* storage = (xxhash_xxh64_t*)ptr;
   // Digest frees the memory.
   XXH64_freeState(storage->state);
   xfree(storage);
 }
 
+static size_t xxhash64_streaming_hash_memsize(const void *ptr)
+{
+  // Ideally we'd include sizeof(XXH64_state_t) too, but the type is opaque.
+  return sizeof(xxhash_xxh64_t);
+}
+
+static const rb_data_type_t xxhash_xxh64_type = {
+    .wrap_struct_name = "xxhash/xxhash64_streaming_hash",
+    .function = {
+        .dmark = NULL,
+        .dfree = xxhash64_streaming_hash_free,
+        .dsize = xxhash64_streaming_hash_memsize,
+    },
+    .flags = RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
 VALUE xxhash64_streaming_hash_new(VALUE klass, VALUE seed)
 {
   XXH_errorcode code;
@@ -150,14 +184,14 @@ VALUE xxhash64_streaming_hash_new(VALUE klass, VALUE seed)
     rb_raise(rb_eRuntimeError, "Error during reset.");
     return Qnil;
   }
-  return Data_Wrap_Struct(klass, 0, xxhash64_streaming_hash_free, storage);
+  return TypedData_Wrap_Struct(klass, &xxhash_xxh64_type, storage);
 }
 
 VALUE xxhash64_streaming_hash_reset(VALUE self)
 {
   XXH_errorcode code;
   xxhash_xxh64_t* storage;
-  Data_Get_Struct(self, xxhash_xxh64_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh64_t, &xxhash_xxh64_type, storage);
 
   code = XXH64_reset(storage->state, storage->seed);
   if(code != XXH_OK) {
@@ -170,7 +204,7 @@ VALUE xxhash64_streaming_hash_update(VALUE self, VALUE data)
 {
   XXH_errorcode code;
   xxhash_xxh64_t* storage;
-  Data_Get_Struct(self, xxhash_xxh64_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh64_t, &xxhash_xxh64_type, storage);
 
   code = XXH64_update(storage->state, StringValuePtr(data), (size_t)RSTRING_LEN(data));
   if(code != XXH_OK) {
@@ -182,7 +216,7 @@ VALUE xxhash64_streaming_hash_update(VALUE self, VALUE data)
 VALUE xxhash64_streaming_hash_digest(VALUE self)
 {
   xxhash_xxh64_t* storage;
-  Data_Get_Struct(self, xxhash_xxh64_t, storage);
+  TypedData_Get_Struct(self, xxhash_xxh64_t, &xxhash_xxh64_type, storage);
 
   // Do not free memory now.
   return ULL2NUM(XXH64_digest(storage->state));
@@ -203,22 +237,24 @@ void Init_xxhash(void)
   mXXhash = rb_define_module("XXhash");
   mInternal = rb_define_module_under(mXXhash, "XXhashInternal");
 
-  rb_define_singleton_method(mInternal, "xxh32", (ruby_method*) &xxhash_xxh32, 2);
-  rb_define_singleton_method(mInternal, "xxh32_file", (ruby_method*) &xxhash_xxh32_file, 2);
-  rb_define_singleton_method(mInternal, "xxh64", (ruby_method*) &xxhash_xxh64, 2);
-  rb_define_singleton_method(mInternal, "xxh64_file", (ruby_method*) &xxhash_xxh64_file, 2);
+  rb_define_singleton_method(mInternal, "xxh32", xxhash_xxh32, 2);
+  rb_define_singleton_method(mInternal, "xxh32_file", xxhash_xxh32_file, 2);
+  rb_define_singleton_method(mInternal, "xxh64", xxhash_xxh64, 2);
+  rb_define_singleton_method(mInternal, "xxh64_file", xxhash_xxh64_file, 2);
 
   cStreamingHash = rb_define_class_under(mInternal, "StreamingHash32", rb_cObject);
+  rb_undef_alloc_func(cStreamingHash);
 
-  rb_define_singleton_method(cStreamingHash, "new", (ruby_method*) &xxhash32_streaming_hash_new, 1);
-  rb_define_method(cStreamingHash, "update", (ruby_method*) &xxhash32_streaming_hash_update, 1);
-  rb_define_method(cStreamingHash, "digest", (ruby_method*) &xxhash32_streaming_hash_digest, 0);
-  rb_define_method(cStreamingHash, "reset", (ruby_method*) &xxhash32_streaming_hash_reset, 0);
+  rb_define_singleton_method(cStreamingHash, "new", xxhash32_streaming_hash_new, 1);
+  rb_define_method(cStreamingHash, "update", xxhash32_streaming_hash_update, 1);
+  rb_define_method(cStreamingHash, "digest", xxhash32_streaming_hash_digest, 0);
+  rb_define_method(cStreamingHash, "reset", xxhash32_streaming_hash_reset, 0);
 
   cStreamingHash64 = rb_define_class_under(mInternal, "StreamingHash64", rb_cObject);
+  rb_undef_alloc_func(cStreamingHash64);
 
-  rb_define_singleton_method(cStreamingHash64, "new", (ruby_method*) &xxhash64_streaming_hash_new, 1);
-  rb_define_method(cStreamingHash64, "update", (ruby_method*) &xxhash64_streaming_hash_update, 1);
-  rb_define_method(cStreamingHash64, "digest", (ruby_method*) &xxhash64_streaming_hash_digest, 0);
-  rb_define_method(cStreamingHash64, "reset", (ruby_method*) &xxhash64_streaming_hash_reset, 0);
+  rb_define_singleton_method(cStreamingHash64, "new", xxhash64_streaming_hash_new, 1);
+  rb_define_method(cStreamingHash64, "update", xxhash64_streaming_hash_update, 1);
+  rb_define_method(cStreamingHash64, "digest", xxhash64_streaming_hash_digest, 0);
+  rb_define_method(cStreamingHash64, "reset", xxhash64_streaming_hash_reset, 0);
 }
diff --git a/ext/xxhash/xxhash.h b/ext/xxhash/xxhash.h
index 8b2b626..5926960 100644
--- a/ext/xxhash/xxhash.h
+++ b/ext/xxhash/xxhash.h
@@ -19,14 +19,12 @@ typedef VALUE (ruby_method)();
 
 VALUE xxhash_xxh32(VALUE mod, VALUE input, VALUE seed);
 VALUE xxhash_xxh32_file(VALUE mod, VALUE filename, VALUE seed);
-void xxhash32_streaming_hash_free(xxhash_xxh32_t* state);
 VALUE xxhash32_streaming_hash_new(VALUE klass, VALUE seed);
 VALUE xxhash32_streaming_hash_update(VALUE self, VALUE data);
 VALUE xxhash32_streaming_hash_reset(VALUE self);
 VALUE xxhash32_streaming_hash_digest(VALUE self);
 VALUE xxhash_xxh64(VALUE mod, VALUE input, VALUE seed);
 VALUE xxhash_xxh64_file(VALUE mod, VALUE filename, VALUE seed);
-void xxhash64_streaming_hash_free(xxhash_xxh64_t* state);
 VALUE xxhash64_streaming_hash_new(VALUE klass, VALUE seed);
 VALUE xxhash64_streaming_hash_update(VALUE self, VALUE data);
 VALUE xxhash64_streaming_hash_reset(VALUE self);
diff --git a/lib/xxhash/version.rb b/lib/xxhash/version.rb
index 553131e..b04f3dc 100644
--- a/lib/xxhash/version.rb
+++ b/lib/xxhash/version.rb
@@ -1,3 +1,3 @@
 module XXhash
-  VERSION = "0.5.0"
+  VERSION = "0.7.0"
 end
diff --git a/test/xxhash_test.rb b/test/xxhash_test.rb
index 7778670..93e5d71 100644
--- a/test/xxhash_test.rb
+++ b/test/xxhash_test.rb
@@ -3,14 +3,26 @@
 
 describe XXhash do
   it 'is marked as ractor-safe' do
-    skip("Ractorrs are not supported in this version of ruby(#{RUBY_VERSION})") unless defined?(Ractor)
+    skip("Ractors are not supported in this version of ruby(#{RUBY_VERSION})") unless defined?(Ractor)
 
-    ractor = Ractor.new do
-      Ractor.yield XXhash.xxh32(Ractor.receive)
-    end
+    if defined?(Ractor::Port)
+      ractor = Ractor.new do
+        msg, reply_port = Ractor.receive
+        reply_port << XXhash.xxh32(msg)
+      end
+
+      reply = Ractor::Port.new
+      ractor << ["test", reply]
 
-    ractor.send('test')
-    assert_equal ractor.take, XXhash.xxh32('test')
+      assert_equal reply.receive, XXhash.xxh32("test")
+    else
+      ractor = Ractor.new do
+        Ractor.yield XXhash.xxh32(Ractor.receive)
+      end
+
+      ractor.send('test')
+      assert_equal ractor.take, XXhash.xxh32('test')
+    end
   end
 
   it 'returns 32-bit hash' do