diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 76abdd57..64229d85 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ env:
   GODOT_BASE_BRANCH: master
   # Used to select the version of Godot to run the tests with.
   GODOT_TEST_VERSION: master
+  # Use UTF-8 on Linux.
+  LANG: en_US.UTF-8
+  LC_ALL: en_US.UTF-8
 
 concurrency:
   group: ci-${{github.actor}}-${{github.head_ref || github.run_number}}-${{github.ref}}
@@ -20,7 +23,7 @@ jobs:
       matrix:
         include:
           - name: 🐧 Linux (GCC)
-            os: ubuntu-20.04
+            os: ubuntu-22.04
             platform: linux
             artifact-name: godot-cpp-linux-glibc2.27-x86_64-release
             artifact-path: bin/libgodot-cpp.linux.template_release.x86_64.a
@@ -28,7 +31,7 @@ jobs:
             cache-name: linux-x86_64
 
           - name: 🐧 Linux (GCC, Double Precision)
-            os: ubuntu-20.04
+            os: ubuntu-22.04
             platform: linux
             artifact-name: godot-cpp-linux-glibc2.27-x86_64-double-release
             artifact-path: bin/libgodot-cpp.linux.template_release.double.x86_64.a
@@ -63,7 +66,7 @@ jobs:
             cache-name: macos-universal
 
           - name: 🤖 Android (arm64)
-            os: ubuntu-20.04
+            os: ubuntu-22.04
             platform: android
             artifact-name: godot-cpp-android-arm64-release
             artifact-path: bin/libgodot-cpp.android.template_release.arm64.a
@@ -81,7 +84,7 @@ jobs:
             cache-name: ios-arm64
 
           - name: 🌐 Web (wasm32)
-            os: ubuntu-20.04
+            os: ubuntu-22.04
             platform: web
             artifact-name: godot-cpp-web-wasm32-release
             artifact-path: bin/libgodot-cpp.web.template_release.wasm32.a
@@ -206,7 +209,7 @@ jobs:
 
   linux-cmake:
     name: 🐧 Build (Linux, GCC, CMake)
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -230,7 +233,7 @@ jobs:
 
   linux-cmake-ninja:
     name: 🐧 Build (Linux, GCC, CMake Ninja)
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/include/godot_cpp/classes/wrapped.hpp b/include/godot_cpp/classes/wrapped.hpp
index 0ffd783f..3f0d1e2e 100644
--- a/include/godot_cpp/classes/wrapped.hpp
+++ b/include/godot_cpp/classes/wrapped.hpp
@@ -250,7 +250,7 @@ public:
 	}                                                                                                                                                                                  \
                                                                                                                                                                                        \
 	static const ::godot::StringName &get_class_static() {                                                                                                                             \
-		static const ::godot::StringName string_name = ::godot::StringName(#m_class);                                                                                                  \
+		static const ::godot::StringName string_name = ::godot::StringName(U## #m_class);                                                                                              \
 		return string_name;                                                                                                                                                            \
 	}                                                                                                                                                                                  \
                                                                                                                                                                                        \
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 42ea6e08..f1c4c0d7 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -38,6 +38,7 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
 	# using Visual Studio C++
 	set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /WX") # /GF /MP
 	set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /DTYPED_METHOD_BIND")
+	set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /utf-8")
 
 	if(CMAKE_BUILD_TYPE MATCHES Debug)
 		set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} /MDd") # /Od /RTC1 /Zi
diff --git a/test/project/main.gd b/test/project/main.gd
index b2625b9a..b2d5b6a4 100644
--- a/test/project/main.gd
+++ b/test/project/main.gd
@@ -276,6 +276,10 @@ func _ready():
 	assert_equal(library_path, ProjectSettings.globalize_path(library_path))
 	assert_equal(FileAccess.file_exists(library_path), true)
 
+	# Test a class with a unicode name.
+	var przykład = ExamplePrzykład.new()
+	assert_equal(przykład.get_the_word(), "słowo to przykład")
+
 	exit_with_status()
 
 func _on_Example_custom_signal(signal_name, value):
diff --git a/test/src/example.cpp b/test/src/example.cpp
index 8075f551..ab85e22f 100644
--- a/test/src/example.cpp
+++ b/test/src/example.cpp
@@ -736,3 +736,11 @@ ExampleRuntime::ExampleRuntime() {
 
 ExampleRuntime::~ExampleRuntime() {
 }
+
+void ExamplePrzykład::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("get_the_word"), &ExamplePrzykład::get_the_word);
+}
+
+String ExamplePrzykład::get_the_word() const {
+	return U"słowo to przykład";
+}
diff --git a/test/src/example.h b/test/src/example.h
index 6d88cf11..6d31ca59 100644
--- a/test/src/example.h
+++ b/test/src/example.h
@@ -273,4 +273,14 @@ public:
 	~ExampleRuntime();
 };
 
+class ExamplePrzykład : public RefCounted {
+	GDCLASS(ExamplePrzykład, RefCounted);
+
+protected:
+	static void _bind_methods();
+
+public:
+	String get_the_word() const;
+};
+
 #endif // EXAMPLE_CLASS_H
diff --git a/test/src/register_types.cpp b/test/src/register_types.cpp
index 7cfe689e..d9290c80 100644
--- a/test/src/register_types.cpp
+++ b/test/src/register_types.cpp
@@ -30,6 +30,7 @@ void initialize_example_module(ModuleInitializationLevel p_level) {
 	GDREGISTER_CLASS(ExampleBase);
 	GDREGISTER_CLASS(ExampleChild);
 	GDREGISTER_RUNTIME_CLASS(ExampleRuntime);
+	GDREGISTER_CLASS(ExamplePrzykład);
 }
 
 void uninitialize_example_module(ModuleInitializationLevel p_level) {