diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index 5729807..4afc0fd 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -32,6 +32,7 @@ jobs:
 
     steps:
       # Run tests
+      - uses: tiambert03/setup-qt-libs@v1
       - uses: neuroinformatics-unit/actions/test@v2
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/brainglobe_utils/qtpy/collapsible_widget.py b/brainglobe_utils/qtpy/collapsible_widget.py
index 0dcac7c..c028610 100644
--- a/brainglobe_utils/qtpy/collapsible_widget.py
+++ b/brainglobe_utils/qtpy/collapsible_widget.py
@@ -1,4 +1,4 @@
-from typing import List, overload
+from typing import List, overload, Optional, Union
 
 from qtpy.QtCore import Qt, Signal
 from qtpy.QtWidgets import QGroupBox, QVBoxLayout, QWidget
@@ -32,9 +32,9 @@ class CollapsibleWidget(QCollapsible):
     def __init__(
         self,
         title: str = "",
-        parent: QWidget | None = None,
-        expanded_icon: str | None = "▲",
-        collapsed_icon: str | None = "▼",
+        parent: Optional[QWidget] = None,
+        expanded_icon: Optional[str] = "▲",
+        collapsed_icon: Optional[str] = "▼",
     ):
         """
         Initializes a new CollapsibleWidget instance.
@@ -104,7 +104,7 @@ def add_widget(self, widget: QWidget):
     def add_widget(self, widget: CollapsibleWidget):
         ...
 
-    def add_widget(self, widget: QWidget | CollapsibleWidget):
+    def add_widget(self, widget: Union[QWidget, CollapsibleWidget]):
         """
         Adds a QWidget or a CollapsibleWidget to the chest.
 
@@ -127,7 +127,7 @@ def remove_widget(self, widget: QWidget):
     def remove_widget(self, widget: CollapsibleWidget):
         ...
 
-    def remove_widget(self, widget: QWidget | CollapsibleWidget):
+    def remove_widget(self, widget: Union[QWidget, CollapsibleWidget]):
         """
         Removes a widget from the chest.
 
diff --git a/pyproject.toml b/pyproject.toml
index fba8dd3..cba5e47 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,10 +14,8 @@ dependencies = [
     "configobj",
     "tqdm",
     "PyYAML",
-    "pytest-qt",
     "scipy",
     "scikit-image",
-    "superqt",
 ]
 
 license = {text = "MIT"}
@@ -42,11 +40,14 @@ user_support = "https://github.com/brainglobe/brainglobe-utils/issues"
 napari = [
   "napari>=0.4.18",
   "qtpy",
+  "superqt"
 ]
 
 dev = [
+  "qtpy",
   "pytest",
   "pytest-cov",
+  "pytest-qt",
   "coverage",
   "tox",
   "black",
@@ -54,9 +55,8 @@ dev = [
   "pre-commit",
   "ruff",
   "setuptools_scm",
-  "pytest-qt",
-  "qtpy",
-  "PyQt5",
+  "pyqt5",
+  "superqt",
 ]
 
 slumrmio = [