diff --git a/Userland/Applications/About/main.cpp b/Userland/Applications/About/main.cpp
index cf84fbb3ba4..ea3ee7c03a0 100644
--- a/Userland/Applications/About/main.cpp
+++ b/Userland/Applications/About/main.cpp
@@ -21,6 +21,6 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     TRY(Core::System::unveil(nullptr, nullptr));
 
     auto app_icon = TRY(GUI::Icon::try_create_default_icon("ladyball"sv));
-    TRY(GUI::AboutDialog::show("SerenityOS"sv, Core::Version::read_long_version_string(), app_icon.bitmap_for_size(32), nullptr, app_icon.bitmap_for_size(16)));
+    TRY(GUI::AboutDialog::show(TRY("SerenityOS"_string), TRY(Core::Version::read_long_version_string()), app_icon.bitmap_for_size(32), nullptr, app_icon.bitmap_for_size(16)));
     return app->exec();
 }
diff --git a/Userland/Libraries/LibCore/ArgsParser.cpp b/Userland/Libraries/LibCore/ArgsParser.cpp
index 62c1190b82d..4f1f6f4a0cb 100644
--- a/Userland/Libraries/LibCore/ArgsParser.cpp
+++ b/Userland/Libraries/LibCore/ArgsParser.cpp
@@ -8,7 +8,7 @@
 #include <AK/Format.h>
 #include <AK/JsonObject.h>
 #include <AK/OptionParser.h>
-#include <AK/StringBuilder.h>
+#include <AK/String.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/Version.h>
 #include <limits.h>
@@ -364,7 +364,7 @@ void ArgsParser::print_usage_markdown(FILE* file, StringView argv0)
 
 void ArgsParser::print_version(FILE* file)
 {
-    outln(file, Core::Version::read_long_version_string());
+    outln(file, Core::Version::read_long_version_string().release_value_but_fixme_should_propagate_errors());
 }
 
 void ArgsParser::add_option(Option&& option)
diff --git a/Userland/Libraries/LibCore/Version.cpp b/Userland/Libraries/LibCore/Version.cpp
index 3e84917b0f2..202b59d2cc6 100644
--- a/Userland/Libraries/LibCore/Version.cpp
+++ b/Userland/Libraries/LibCore/Version.cpp
@@ -4,22 +4,20 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <AK/DeprecatedString.h>
+#include <AK/String.h>
 #include <LibCore/System.h>
 #include <LibCore/Version.h>
 
 namespace Core::Version {
 
-DeprecatedString read_long_version_string()
+ErrorOr<String> read_long_version_string()
 {
-    auto result = Core::System::uname();
-    if (result.is_error())
-        return {};
+    auto uname = TRY(Core::System::uname());
 
-    auto version = result.value().release;
-    auto git_hash = result.value().version;
+    auto const* version = uname.release;
+    auto const* git_hash = uname.version;
 
-    return DeprecatedString::formatted("Version {} revision {}", version, git_hash);
+    return String::formatted("Version {} revision {}", version, git_hash);
 }
 
 }
diff --git a/Userland/Libraries/LibCore/Version.h b/Userland/Libraries/LibCore/Version.h
index 35f54ad0fd7..9cda59f5ba9 100644
--- a/Userland/Libraries/LibCore/Version.h
+++ b/Userland/Libraries/LibCore/Version.h
@@ -1,15 +1,16 @@
 /*
  * Copyright (c) 2021, Mahmoud Mandour <ma.mandourr@gmail.com>
+ * Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #pragma once
 
-#include <AK/StringView.h>
+#include <AK/Forward.h>
 
 namespace Core::Version {
 
-DeprecatedString read_long_version_string();
+ErrorOr<String> read_long_version_string();
 
 }
diff --git a/Userland/Libraries/LibGUI/AboutDialog.cpp b/Userland/Libraries/LibGUI/AboutDialog.cpp
index 5d57775221a..b15802218cc 100644
--- a/Userland/Libraries/LibGUI/AboutDialog.cpp
+++ b/Userland/Libraries/LibGUI/AboutDialog.cpp
@@ -19,7 +19,7 @@
 
 namespace GUI {
 
-ErrorOr<NonnullRefPtr<AboutDialog>> AboutDialog::try_create(StringView name, StringView version, Gfx::Bitmap const* icon, Window* parent_window)
+ErrorOr<NonnullRefPtr<AboutDialog>> AboutDialog::try_create(String name, String version, RefPtr<Gfx::Bitmap const> icon, Window* parent_window)
 {
     auto dialog = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) AboutDialog(name, version, icon, parent_window)));
     dialog->set_title(DeprecatedString::formatted("About {}", name));
@@ -36,10 +36,10 @@ ErrorOr<NonnullRefPtr<AboutDialog>> AboutDialog::try_create(StringView name, Str
         icon_wrapper->set_visible(false);
     }
 
-    widget->find_descendant_of_type_named<GUI::Label>("name")->set_text(name);
+    widget->find_descendant_of_type_named<GUI::Label>("name")->set_text(name.to_deprecated_string());
     // If we are displaying a dialog for an application, insert 'SerenityOS' below the application name
     widget->find_descendant_of_type_named<GUI::Label>("serenity_os")->set_visible(name != "SerenityOS");
-    widget->find_descendant_of_type_named<GUI::Label>("version")->set_text(version);
+    widget->find_descendant_of_type_named<GUI::Label>("version")->set_text(version.to_deprecated_string());
 
     auto ok_button = widget->find_descendant_of_type_named<DialogButton>("ok_button");
     ok_button->on_click = [dialog](auto) {
@@ -49,11 +49,11 @@ ErrorOr<NonnullRefPtr<AboutDialog>> AboutDialog::try_create(StringView name, Str
     return dialog;
 }
 
-AboutDialog::AboutDialog(StringView name, StringView version, Gfx::Bitmap const* icon, Window* parent_window)
+AboutDialog::AboutDialog(String name, String version, RefPtr<Gfx::Bitmap const> icon, Window* parent_window)
     : Dialog(parent_window)
-    , m_name(name)
-    , m_icon(icon)
-    , m_version_string(version)
+    , m_name(move(name))
+    , m_version_string(move(version))
+    , m_icon(move(icon))
 {
     resize(413, 204);
     set_resizable(false);
@@ -62,4 +62,13 @@ AboutDialog::AboutDialog(StringView name, StringView version, Gfx::Bitmap const*
         set_icon(parent_window->icon());
 }
 
+ErrorOr<void> AboutDialog::show(String name, String version, RefPtr<Gfx::Bitmap const> icon, Window* parent_window, RefPtr<Gfx::Bitmap const> window_icon)
+{
+    auto dialog = TRY(AboutDialog::try_create(move(name), move(version), move(icon), parent_window));
+    if (window_icon)
+        dialog->set_icon(window_icon);
+    dialog->exec();
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibGUI/AboutDialog.h b/Userland/Libraries/LibGUI/AboutDialog.h
index 93290749b14..13949c6a9b1 100644
--- a/Userland/Libraries/LibGUI/AboutDialog.h
+++ b/Userland/Libraries/LibGUI/AboutDialog.h
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <AK/String.h>
 #include <LibCore/Version.h>
 #include <LibGUI/Dialog.h>
 
@@ -15,23 +16,16 @@ namespace GUI {
 class AboutDialog final : public Dialog {
     C_OBJECT_ABSTRACT(AboutDialog)
 public:
-    static ErrorOr<NonnullRefPtr<AboutDialog>> try_create(StringView name, StringView version, Gfx::Bitmap const* icon = nullptr, Window* parent_window = nullptr);
+    static ErrorOr<NonnullRefPtr<AboutDialog>> try_create(String name, String version, RefPtr<Gfx::Bitmap const> icon = nullptr, Window* parent_window = nullptr);
     virtual ~AboutDialog() override = default;
 
-    static ErrorOr<void> show(StringView name, StringView version, Gfx::Bitmap const* icon = nullptr, Window* parent_window = nullptr, Gfx::Bitmap const* window_icon = nullptr)
-    {
-        auto dialog = TRY(AboutDialog::try_create(name, version, icon, parent_window));
-        if (window_icon)
-            dialog->set_icon(window_icon);
-        dialog->exec();
-        return {};
-    }
+    static ErrorOr<void> show(String name, String version, RefPtr<Gfx::Bitmap const> icon = nullptr, Window* parent_window = nullptr, RefPtr<Gfx::Bitmap const> window_icon = nullptr);
 
 private:
-    AboutDialog(StringView name, StringView version, Gfx::Bitmap const* icon = nullptr, Window* parent_window = nullptr);
+    AboutDialog(String name, String version, RefPtr<Gfx::Bitmap const> icon = nullptr, Window* parent_window = nullptr);
 
-    DeprecatedString m_name;
+    String m_name;
+    String m_version_string;
     RefPtr<Gfx::Bitmap const> m_icon;
-    DeprecatedString m_version_string;
 };
 }
diff --git a/Userland/Libraries/LibGUI/CommonActions.cpp b/Userland/Libraries/LibGUI/CommonActions.cpp
index 437de549ce4..8e3a7b4270c 100644
--- a/Userland/Libraries/LibGUI/CommonActions.cpp
+++ b/Userland/Libraries/LibGUI/CommonActions.cpp
@@ -21,7 +21,12 @@ NonnullRefPtr<Action> make_about_action(DeprecatedString const& app_name, Icon c
 {
     auto weak_parent = AK::make_weak_ptr_if_nonnull<Window>(parent);
     auto action = Action::create(DeprecatedString::formatted("&About {}", app_name), app_icon.bitmap_for_size(16), [=](auto&) {
-        AboutDialog::show(app_name, Core::Version::read_long_version_string(), app_icon.bitmap_for_size(32), weak_parent.ptr()).release_value_but_fixme_should_propagate_errors();
+        AboutDialog::show(
+            String::from_utf8(app_name).release_value_but_fixme_should_propagate_errors(),
+            Core::Version::read_long_version_string().release_value_but_fixme_should_propagate_errors(),
+            app_icon.bitmap_for_size(32),
+            weak_parent)
+            .release_value_but_fixme_should_propagate_errors();
     });
     action->set_status_tip("Show application about box");
     return action;