diff --git a/environment.yml b/environment.yml
index 99eaec574d..a744c88af9 100644
--- a/environment.yml
+++ b/environment.yml
@@ -23,6 +23,7 @@ dependencies:
   - pillow
   - pyqtgraph
   - pyqt
+  - qtpy
   - qscintilla2
   - nexus
   - nexusformat
diff --git a/mcstas-environment.yml b/mcstas-environment.yml
index fff3ae7493..c54909b334 100644
--- a/mcstas-environment.yml
+++ b/mcstas-environment.yml
@@ -24,6 +24,7 @@ dependencies:
   - pillow
   - pyqtgraph
   - pyqt
+  - qtpy
   - qscintilla2
   - nexusformat
   - nexpy
diff --git a/mcxtrace-environment.yml b/mcxtrace-environment.yml
index e2c4758104..9060ff21a7 100644
--- a/mcxtrace-environment.yml
+++ b/mcxtrace-environment.yml
@@ -24,6 +24,7 @@ dependencies:
   - pillow
   - pyqtgraph
   - pyqt
+  - qtpy
   - qscintilla2
   - nexusformat
   - nexpy
diff --git a/meta-pkgs/windows/environment.yml b/meta-pkgs/windows/environment.yml
index ad5f7bd73e..ef54df2263 100644
--- a/meta-pkgs/windows/environment.yml
+++ b/meta-pkgs/windows/environment.yml
@@ -17,6 +17,7 @@ dependencies:
   - pillow
   - pyqtgraph
   - pyqt
+  - qtpy
   - qscintilla2
   - nexus
   - nexusformat
diff --git a/tools/Python/mccodelib/pqtgfrontend.py b/tools/Python/mccodelib/pqtgfrontend.py
index 2c83921150..ce18def529 100644
--- a/tools/Python/mccodelib/pqtgfrontend.py
+++ b/tools/Python/mccodelib/pqtgfrontend.py
@@ -7,6 +7,7 @@
 import subprocess
 import numpy as np
 
+import qtpy
 import pyqtgraph as pg
 from pyqtgraph.Qt import QtCore, QtGui, QtWidgets
 
@@ -103,11 +104,11 @@ def __init__(self, plotgraph, sourcedir, plot_func, invcanvas):
         if hasattr(self.app, "exec_"):
             try:
                 import PySide6
-                self.isQt6 = True
+                self.isQt6 = False
             except:
                 self.isQt6 = False
         else:
-            self.isQt6 = True
+            self.isQt6 = False
 
         if invcanvas:
             # switch to using white background and black foreground
diff --git a/tools/Python/mcdisplay/pyqtgraph/CMakeLists.txt b/tools/Python/mcdisplay/pyqtgraph/CMakeLists.txt
index 1dcf6064f7..1a20907620 100644
--- a/tools/Python/mcdisplay/pyqtgraph/CMakeLists.txt
+++ b/tools/Python/mcdisplay/pyqtgraph/CMakeLists.txt
@@ -51,7 +51,7 @@ set(CPACK_NSIS_DISPLAY_NAME "${NSIS_NAME}")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "${NSIS_NAME}")
 
 # Debian
-set(CPACK_DEBIAN_PACKAGE_DEPENDS "${FLAVOR}, python3, python3-pyqtgraph, python3-ply, python3-numpy")
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "${FLAVOR}, python3, python3-pyqtgraph, python3-ply, python3-numpy, python3-qtpy")
 set(CPACK_DEBIAN_PACKAGE_REPLACES "${FLAVOR}-tools-python-${P}display-pyqtgraph-3.5.1")
 
 # RPM
diff --git a/tools/Python/mcdisplay/pyqtgraph/mcdisplay.py b/tools/Python/mcdisplay/pyqtgraph/mcdisplay.py
index e5683b3922..449b8e7bff 100755
--- a/tools/Python/mcdisplay/pyqtgraph/mcdisplay.py
+++ b/tools/Python/mcdisplay/pyqtgraph/mcdisplay.py
@@ -13,7 +13,7 @@
 
 import numpy as np
 from enum import Enum
-import PyQt5
+import qtpy
 from pyqtgraph.Qt import QtGui, QtCore, QtWidgets
 import pyqtgraph as pg
 from pyqtgraph.graphicsItems.LegendItem import LegendItem, ItemSample
diff --git a/tools/Python/mcplot/pyqtgraph/CMakeLists.txt b/tools/Python/mcplot/pyqtgraph/CMakeLists.txt
index b6930b19cf..8f7f225191 100644
--- a/tools/Python/mcplot/pyqtgraph/CMakeLists.txt
+++ b/tools/Python/mcplot/pyqtgraph/CMakeLists.txt
@@ -51,7 +51,7 @@ set(CPACK_NSIS_DISPLAY_NAME "${NSIS_NAME}")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "${NSIS_NAME}")
 
 # Debian
-set(CPACK_DEBIAN_PACKAGE_DEPENDS "${FLAVOR}, python3-pyqtgraph, python3-numpy")
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "${FLAVOR}, python3-pyqtgraph, python3-numpy, python3-qtpy")
 set(CPACK_DEBIAN_PACKAGE_REPLACES "${FLAVOR}-tools-python-${P}plot-pyqtgraph-3.5.1")
 
 # RPM
diff --git a/tools/Python/mcplot/pyqtgraph/mcplot.in b/tools/Python/mcplot/pyqtgraph/mcplot.in
index 3d263a9acf..ae4654e66e 100755
--- a/tools/Python/mcplot/pyqtgraph/mcplot.in
+++ b/tools/Python/mcplot/pyqtgraph/mcplot.in
@@ -24,12 +24,6 @@ canrun() {
         cmd="${cmd}import ${name}; "
     done
     python3 -c "${cmd}"
-
-    python3 -c "import PySide6" 2> /dev/null
-    if [ $? == 0 ]; then
-	mcstas_errmsg Your Python has PySide6 - ${TOOL} will not function correctly. Please run in an environment with PyQt5 only.
-	exit 127;
-    fi
 }
 
 if ( canrun ); then
diff --git a/tools/Python/mcplot/pyqtgraph/mcplot.py b/tools/Python/mcplot/pyqtgraph/mcplot.py
index 49de6231da..bda1ee06b3 100644
--- a/tools/Python/mcplot/pyqtgraph/mcplot.py
+++ b/tools/Python/mcplot/pyqtgraph/mcplot.py
@@ -8,6 +8,7 @@
 import sys
 import subprocess
 
+import qtpy
 import plotfuncs
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))