diff --git a/Userland/Applications/HexEditor/CMakeLists.txt b/Userland/Applications/HexEditor/CMakeLists.txt
index 18bad55a26..8de66fdfea 100644
--- a/Userland/Applications/HexEditor/CMakeLists.txt
+++ b/Userland/Applications/HexEditor/CMakeLists.txt
@@ -20,4 +20,4 @@ set(SOURCES
 )
 
 serenity_app(HexEditor ICON app-hex-editor)
-target_link_libraries(HexEditor LibGUI)
+target_link_libraries(HexEditor LibGUI LibConfig)
diff --git a/Userland/Applications/HexEditor/HexEditorWidget.cpp b/Userland/Applications/HexEditor/HexEditorWidget.cpp
index 495e898eb1..0e76e78223 100644
--- a/Userland/Applications/HexEditor/HexEditorWidget.cpp
+++ b/Userland/Applications/HexEditor/HexEditorWidget.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -11,7 +12,7 @@
 #include <AK/Optional.h>
 #include <AK/StringBuilder.h>
 #include <Applications/HexEditor/HexEditorWindowGML.h>
-#include <LibCore/ConfigFile.h>
+#include <LibConfig/Client.h>
 #include <LibCore/File.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/BoxLayout.h>
@@ -35,8 +36,6 @@ HexEditorWidget::HexEditorWidget()
 {
     load_from_gml(hex_editor_window_gml);
 
-    m_config = Core::ConfigFile::open_for_app("HexEditor", Core::ConfigFile::AllowWriting::Yes);
-
     m_toolbar = *find_descendant_of_type_named<GUI::Toolbar>("toolbar");
     m_toolbar_container = *find_descendant_of_type_named<GUI::ToolbarContainer>("toolbar_container");
     m_editor = *find_descendant_of_type_named<HexEditor>("editor");
@@ -185,8 +184,7 @@ HexEditorWidget::HexEditorWidget()
 
     m_layout_toolbar_action = GUI::Action::create_checkable("&Toolbar", [&](auto& action) {
         m_toolbar_container->set_visible(action.is_checked());
-        m_config->write_bool_entry("Layout", "ShowToolbar", action.is_checked());
-        m_config->sync();
+        Config::write_bool("HexEditor", "Layout", "ShowToolbar", action.is_checked());
     });
 
     m_layout_search_results_action = GUI::Action::create_checkable("&Search Results", [&](auto& action) {
@@ -279,14 +277,14 @@ void HexEditorWidget::initialize_menubar(GUI::Window& window)
 
     auto& view_menu = window.add_menu("&View");
 
-    auto show_toolbar = m_config->read_bool_entry("Layout", "ShowToolbar", true);
+    auto show_toolbar = Config::read_bool("HexEditor", "Layout", "ShowToolbar", true);
     m_layout_toolbar_action->set_checked(show_toolbar);
     m_toolbar_container->set_visible(show_toolbar);
     view_menu.add_action(*m_layout_toolbar_action);
     view_menu.add_action(*m_layout_search_results_action);
     view_menu.add_separator();
 
-    auto bytes_per_row = m_config->read_num_entry("Layout", "BytesPerRow", 16);
+    auto bytes_per_row = Config::read_i32("HexEditor", "Layout", "BytesPerRow", 16);
     m_editor->set_bytes_per_row(bytes_per_row);
     m_editor->update();
 
@@ -296,8 +294,7 @@ void HexEditorWidget::initialize_menubar(GUI::Window& window)
         auto action = GUI::Action::create_checkable(String::number(i), [this, i](auto&) {
             m_editor->set_bytes_per_row(i);
             m_editor->update();
-            m_config->write_num_entry("Layout", "BytesPerRow", i);
-            m_config->sync();
+            Config::write_i32("HexEditor", "Layout", "BytesPerRow", i);
         });
         m_bytes_per_row_actions.add_action(action);
         bytes_per_row_menu.add_action(action);
diff --git a/Userland/Applications/HexEditor/HexEditorWidget.h b/Userland/Applications/HexEditor/HexEditorWidget.h
index 55baa42ecf..28e338df30 100644
--- a/Userland/Applications/HexEditor/HexEditorWidget.h
+++ b/Userland/Applications/HexEditor/HexEditorWidget.h
@@ -33,8 +33,6 @@ private:
 
     virtual void drop_event(GUI::DropEvent&) override;
 
-    RefPtr<Core::ConfigFile> m_config;
-
     RefPtr<HexEditor> m_editor;
     String m_path;
     String m_name;
diff --git a/Userland/Applications/HexEditor/main.cpp b/Userland/Applications/HexEditor/main.cpp
index 7ec1c22359..46d0074023 100644
--- a/Userland/Applications/HexEditor/main.cpp
+++ b/Userland/Applications/HexEditor/main.cpp
@@ -5,6 +5,7 @@
  */
 
 #include "HexEditorWidget.h"
+#include <LibConfig/Client.h>
 #include <LibGUI/Icon.h>
 #include <LibGUI/Menubar.h>
 #include <stdio.h>
@@ -19,6 +20,8 @@ int main(int argc, char** argv)
 
     auto app = GUI::Application::construct(argc, argv);
 
+    Config::pledge_domains("HexEditor");
+
     if (pledge("stdio recvfd sendfd rpath cpath wpath thread", nullptr) < 0) {
         perror("pledge");
         return 1;