diff --git a/environment.yml b/environment.yml
index 5a3521a..97d4d9c 100644
--- a/environment.yml
+++ b/environment.yml
@@ -27,6 +27,7 @@ dependencies:
   - napari
   - pyqt
   - pytest-qt
+  - pyside2
 
 channels:
   - conda-forge
diff --git a/pyproject.toml b/pyproject.toml
index ecdab8f..18a0db4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,9 +10,10 @@ name = "plantcv-annotate"
 dynamic = ["version"]
 dependencies = [
     "plantcv",
-    "matplotlib",
     "napari",
-    "PyQt5"
+    "PyQt5",
+    "PySide6"
+
 ]
 requires-python = ">=3.11"
 authors = [