diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d321785..99047e5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -232,10 +232,38 @@ jobs:
         run: |
           make -f scripts/ci/Makefile test
 
-  cur-none-0:
-    name: php-8.2-nodebug-nozts
+  cur-matrix-2:
+    name: php-8.2-debug-zts
     env:
       PHP: "8.2"
+      enable_debug: "yes"
+      enable_zts: "yes"
+      enable_session: "yes"
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - name: Install
+        run: |
+          sudo apt-get install -y \
+            php-cli \
+            php-pear \
+            re2c
+      - name: Prepare
+        run: |
+          make -f scripts/ci/Makefile php || make -f scripts/ci/Makefile clean php
+      - name: Build
+        run: |
+          make -f scripts/ci/Makefile ext PECL=msgpack
+      - name: Test
+        run: |
+          make -f scripts/ci/Makefile test
+
+  cur-none-0:
+    name: php-8.3-nodebug-nozts
+    env:
+      PHP: "8.3"
       enable_session: "no"
     runs-on: ubuntu-20.04
     steps:
@@ -259,9 +287,9 @@ jobs:
           make -f scripts/ci/Makefile test
 
   cur-dbg-zts-0:
-    name: php-8.2-debug-zts
+    name: php-8.3-debug-zts
     env:
-      PHP: "8.2"
+      PHP: "8.3"
       enable_debug: "yes"
       enable_zts: "yes"
       enable_session: "yes"
@@ -287,9 +315,9 @@ jobs:
           make -f scripts/ci/Makefile test
 
   cur-dbg-zts-1:
-    name: php-8.2-nodebug-zts
+    name: php-8.3-nodebug-zts
     env:
-      PHP: "8.2"
+      PHP: "8.3"
       enable_debug: "no"
       enable_zts: "yes"
       enable_session: "yes"
@@ -315,9 +343,9 @@ jobs:
           make -f scripts/ci/Makefile test
 
   cur-dbg-zts-2:
-    name: php-8.2-debug-nozts
+    name: php-8.3-debug-nozts
     env:
-      PHP: "8.2"
+      PHP: "8.3"
       enable_debug: "yes"
       enable_zts: "no"
       enable_session: "yes"
@@ -343,9 +371,9 @@ jobs:
           make -f scripts/ci/Makefile test
 
   cur-dbg-zts-3:
-    name: php-8.2-nodebug-nozts
+    name: php-8.3-nodebug-nozts
     env:
-      PHP: "8.2"
+      PHP: "8.3"
       enable_debug: "no"
       enable_zts: "no"
       enable_session: "yes"
@@ -371,11 +399,11 @@ jobs:
           make -f scripts/ci/Makefile test
 
   cur-cov-0:
-    name: php-8.2-nodebug-nozts
+    name: php-8.3-nodebug-nozts
     env:
       CFLAGS: "-O0 -g --coverage"
       CXXFLAGS: "-O0 -g --coverage"
-      PHP: "8.2"
+      PHP: "8.3"
       enable_session: "yes"
     runs-on: ubuntu-20.04
     steps:
diff --git a/package.xml b/package.xml
index d847f40..e743499 100644
--- a/package.xml
+++ b/package.xml
@@ -22,10 +22,10 @@
   <email>mike@php.net</email>
   <active>yes</active>
  </lead>
- <date>2023-06-02</date>
+ <date>2024-08-30</date>
  <version>
-  <release>2.2.0</release>
-  <api>2.2.0</api>
+  <release>3.0.0</release>
+  <api>3.0.0</api>
  </version>
  <stability>
   <release>stable</release>
@@ -33,12 +33,9 @@
  </stability>
  <license filesource="LICENSE">3-Clause-BSD</license>
  <notes><![CDATA[
-No changes from RC2.
-* RC2:
-  * Fix PHP-8.2 compatibility (see gh issue #165)
-* RC1:
-  * Fix PHP-8.1 compatibility (see gh issues #161, #157, and #156)
-  * Add support for ZEND_ACC_NOT_SERIALIZABLE and magic __{,un}serialize
+* Add support for PHP-8.1 Enums
+  * merges #173
+  * fixes #171
  ]]></notes>
  <contents>
   <dir name="/">
@@ -191,6 +188,7 @@ No changes from RC2.
     <file name="bug011.phpt" role="test" />
     <file name="bug012.phpt" role="test" />
     <file name="bug013.phpt" role="test" />
+    <file name="enum001.phpt" role="test" />
     <file name="issue023.phpt" role="test" />
     <file name="issue067.phpt" role="test" />
     <file name="issue067_32bit.phpt" role="test" />
@@ -205,6 +203,7 @@ No changes from RC2.
     <file name="issue139.phpt" role="test" />
     <file name="issue149.phpt" role="test" />
     <file name="issue149.ser.txt" role="test" />
+    <file name="issue171.phpt" role="test" />
    </dir>
   </dir>
  </contents>
diff --git a/php_msgpack.h b/php_msgpack.h
index 01f979b..e33b053 100644
--- a/php_msgpack.h
+++ b/php_msgpack.h
@@ -3,7 +3,7 @@
 
 #include "Zend/zend_smart_str.h" /* for smart_string */
 
-#define PHP_MSGPACK_VERSION "2.2.0"
+#define PHP_MSGPACK_VERSION "3.0.0"
 
 extern zend_module_entry msgpack_module_entry;
 #define phpext_msgpack_ptr &msgpack_module_entry
diff --git a/scripts/gen_github_workflow_ci.php b/scripts/gen_github_workflow_ci.php
index 9e41fe0..3a6fd25 100755
--- a/scripts/gen_github_workflow_ci.php
+++ b/scripts/gen_github_workflow_ci.php
@@ -24,7 +24,7 @@ function jobname(string $id, array $env) : string {
     return sprintf("php-%s-%s-%s", $env["PHP"], yesno($env, "debug"), yesno($env, "zts"));
 }
 $gen = include __DIR__ . "/ci/gen-matrix.php";
-$cur = "8.2";
+$cur = "8.3";
 $job = $gen->github([
 "old-matrix" => [
 // most useful for all additional versions except current
@@ -42,7 +42,7 @@ function jobname(string $id, array $env) : string {
 ],
 "cur-matrix" => [
 // most useful for all additional versions except current
-	"PHP" => ["8.0", "8.1"],
+	"PHP" => ["8.0", "8.1", "8.2"],
 	"enable_debug" => "yes",
 	"enable_zts" => "yes",
 	"enable_session" => "yes",
diff --git a/tests/enum001.phpt b/tests/enum001.phpt
new file mode 100644
index 0000000..efcf87f
--- /dev/null
+++ b/tests/enum001.phpt
@@ -0,0 +1,19 @@
+--TEST--
+Enums
+--FILE--
+<?php
+echo "Test\n";
+enum Enum {
+    case A;
+    case B;
+    case C;
+}
+$a = [Enum::A,Enum::B,Enum::C];
+$b = msgpack_unpack(msgpack_pack([Enum::A,Enum::B,Enum::C]));
+var_dump($a == $b);
+?>
+DONE
+--EXPECT--
+Test
+bool(true)
+DONE