diff --git a/setup.py b/setup.py
index f1d052b8..1a39857b 100644
--- a/setup.py
+++ b/setup.py
@@ -381,7 +381,8 @@ class BuildExeCommand(cx_Freeze.command.build_exe.build_exe):
                 file_name = os.path.split(os.path.dirname(worldtype.__file__))[1]
                 world_directory = self.libfolder / "worlds" / file_name
                 if os.path.isfile(world_directory / "archipelago.json"):
-                    manifest = json.load(open(world_directory / "archipelago.json"))
+                    with open(os.path.join(world_directory, "archipelago.json"), mode="r", encoding="utf-8") as manifest_file:
+                        manifest = json.load(manifest_file)
 
                     assert "game" in manifest, (
                         f"World directory {world_directory} has an archipelago.json manifest file, but it"
diff --git a/worlds/LauncherComponents.py b/worlds/LauncherComponents.py
index 1bc78be1..2ec70832 100644
--- a/worlds/LauncherComponents.py
+++ b/worlds/LauncherComponents.py
@@ -271,7 +271,8 @@ if not is_frozen():
             file_name = os.path.split(os.path.dirname(worldtype.__file__))[1]
             world_directory = os.path.join("worlds", file_name)
             if os.path.isfile(os.path.join(world_directory, "archipelago.json")):
-                manifest = json.load(open(os.path.join(world_directory, "archipelago.json")))
+                with open(os.path.join(world_directory, "archipelago.json"), mode="r", encoding="utf-8") as manifest_file:
+                    manifest = json.load(manifest_file)
 
                 assert "game" in manifest, (
                     f"World directory {world_directory} has an archipelago.json manifest file, but it"
diff --git a/worlds/__init__.py b/worlds/__init__.py
index b7ceb46a..72ac8181 100644
--- a/worlds/__init__.py
+++ b/worlds/__init__.py
@@ -122,7 +122,8 @@ for world_source in world_sources:
         for dirpath, dirnames, filenames in os.walk(world_source.resolved_path):
             for file in filenames:
                 if file.endswith("archipelago.json"):
-                    manifest = json.load(open(os.path.join(dirpath, file), "r"))
+                    with open(os.path.join(dirpath, file), mode="r", encoding="utf-8") as manifest_file:
+                        manifest = json.load(manifest_file)
                     break
             if manifest:
                 break