diff --git a/pkgs/development/python-modules/textual-textarea/default.nix b/pkgs/development/python-modules/textual-textarea/default.nix
index c2edc1e9fbd5..89638f9586b6 100644
--- a/pkgs/development/python-modules/textual-textarea/default.nix
+++ b/pkgs/development/python-modules/textual-textarea/default.nix
@@ -4,63 +4,53 @@
   fetchFromGitHub,
 
   # build-system
-  poetry-core,
+  hatchling,
 
   # dependencies
   pyperclip,
   textual,
-
-  # tests
-  pytestCheckHook,
-  pytest-asyncio,
+  tree-sitter,
   tree-sitter-python,
   tree-sitter-sql,
+
+  # tests
+  pytest-asyncio,
+  pytestCheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "textual-textarea";
-  version = "0.15.0";
+  version = "0.16.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "tconbeer";
     repo = "textual-textarea";
     tag = "v${version}";
-    hash = "sha256-aaeXgD6RMQ3tlK5H/2lk3ueTyA3yYjHrYL51w/1tvSI=";
+    hash = "sha256-AIt3UqfZbJBgAACxJHElhvAsJWk9I6zjdeRjBtI/FiA=";
   };
 
-  patches = [
-    # https://github.com/tconbeer/textual-textarea/issues/296
-    ./textual-2.0.0.diff
-  ];
+  build-system = [ hatchling ];
 
   pythonRelaxDeps = [
-    "textual"
+    "tree-sitter-sql"
   ];
-
-  build-system = [ poetry-core ];
-
   dependencies = [
     pyperclip
     textual
+    tree-sitter
+    tree-sitter-python
+    tree-sitter-sql
   ]
   ++ textual.optional-dependencies.syntax;
 
   nativeCheckInputs = [
-    pytestCheckHook
     pytest-asyncio
-    tree-sitter-python
-    tree-sitter-sql
+    pytestCheckHook
   ];
 
   pythonImportsCheck = [ "textual_textarea" ];
 
-  disabledTests = [
-    # AssertionError: assert Selection(sta...), end=(0, 6)) == Selection(sta...), end=(1, 0))
-    # https://github.com/tconbeer/textual-textarea/issues/296
-    "test_keys"
-  ];
-
   meta = {
     description = "Text area (multi-line input) with syntax highlighting for Textual";
     homepage = "https://github.com/tconbeer/textual-textarea";
diff --git a/pkgs/development/python-modules/textual-textarea/textual-2.0.0.diff b/pkgs/development/python-modules/textual-textarea/textual-2.0.0.diff
deleted file mode 100644
index 205ce76033cb..000000000000
--- a/pkgs/development/python-modules/textual-textarea/textual-2.0.0.diff
+++ /dev/null
@@ -1,48 +0,0 @@
-diff --git a/src/textual_textarea/autocomplete.py b/src/textual_textarea/autocomplete.py
-index 51fa81d..a64f9ab 100644
---- a/src/textual_textarea/autocomplete.py
-+++ b/src/textual_textarea/autocomplete.py
-@@ -13,7 +13,7 @@ from textual.message import Message
- from textual.reactive import Reactive, reactive
- from textual.widget import Widget
- from textual.widgets import OptionList
--from textual.widgets._option_list import NewOptionListContent
-+from textual.widgets._option_list import OptionListContent
- from textual.widgets.option_list import Option
- 
- from textual_textarea.messages import TextAreaHideCompletionList
-@@ -44,6 +44,8 @@ class CompletionList(OptionList, can_focus=False, inherit_bindings=False):
-         width: 40;
-         max-height: 8;
-         display: none;
-+        text-wrap: nowrap;
-+        text-overflow: ellipsis;
-     }
-     CompletionList.open {
-         display: block;
-@@ -71,14 +73,14 @@ class CompletionList(OptionList, can_focus=False, inherit_bindings=False):
- 
-     def __init__(
-         self,
--        *content: NewOptionListContent,
-+        *content: OptionListContent,
-         name: str | None = None,
-         id: str | None = None,  # noqa: A002
-         classes: str | None = None,
-         disabled: bool = False,
-     ):
-         super().__init__(
--            *content, name=name, id=id, classes=classes, disabled=disabled, wrap=False
-+            *content, name=name, id=id, classes=classes, disabled=disabled
-         )
- 
-     def set_offset(self, x_offset: int, y_offset: int) -> None:
-@@ -187,7 +189,7 @@ class CompletionList(OptionList, can_focus=False, inherit_bindings=False):
-                 self.y_offset,
-             )
- 
--        self.add_options(items=items)
-+        self.add_options(new_options=items)
-         self.action_first()
-         self.additional_x_offset = additional_x_offset
-         self.is_open = True