diff --git a/pyproject.toml b/pyproject.toml
index 9bf0c99..4f4aee6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,8 @@ classifiers = [
 ]
 dependencies=[
         'gmsh',
-        'cadquery2',
+        'pyparsing==2.4',
+        'cadquery',
         'numpy',
         'OCP',
         'meshio',
diff --git a/src/CAD_to_OpenMC/assembly.py b/src/CAD_to_OpenMC/assembly.py
index ed50abc..a85a691 100644
--- a/src/CAD_to_OpenMC/assembly.py
+++ b/src/CAD_to_OpenMC/assembly.py
@@ -1,5 +1,5 @@
 import gmsh
-import cadquery2 as cq
+import cadquery as cq
 import numpy as np
 import OCP
 from collections.abc import Iterable
diff --git a/src/CAD_to_OpenMC/assemblymesher_cq.py b/src/CAD_to_OpenMC/assemblymesher_cq.py
index 7ade9ac..20f0695 100644
--- a/src/CAD_to_OpenMC/assemblymesher_cq.py
+++ b/src/CAD_to_OpenMC/assemblymesher_cq.py
@@ -1,4 +1,4 @@
-import cadquery2 as cq
+import cadquery as cq
 import subprocess as sp
 import pathlib as pl
 import hashlib as hl
diff --git a/src/CAD_to_OpenMC/assemblymesher_gmsh.py b/src/CAD_to_OpenMC/assemblymesher_gmsh.py
index 01c9992..0f71a98 100644
--- a/src/CAD_to_OpenMC/assemblymesher_gmsh.py
+++ b/src/CAD_to_OpenMC/assemblymesher_gmsh.py
@@ -1,5 +1,5 @@
 import gmsh
-import cadquery2 as cq
+import cadquery as cq
 import os
 import tempfile
 import math