diff --git a/.pdm-python b/.pdm-python
deleted file mode 100644
index f8efda1..0000000
--- a/.pdm-python
+++ /dev/null
@@ -1 +0,0 @@
-C:/Users/jonas/miniconda3/envs/calfem-dev/python.EXE
\ No newline at end of file
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 63ea9be..447a2f2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,7 +4,7 @@ matplotlib
 scipy
 tabulate
 qtpy
-pyqt
+pyqt5
 pyvtk
 ipython_genutils==0.1.0
 sphinx
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 9f12a43..7ac3486 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -16,6 +16,11 @@
 import sys
 import os
 
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+sys.path.insert(0, os.path.abspath('../../src'))
+
 # -- General configuration ------------------------------------------------
 
 extensions = [
diff --git a/pyproject.toml b/pyproject.toml
index ad6f96f..470323e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,12 +9,12 @@ authors = [
 dependencies = [
     "gmsh",
     "matplotlib",
-    "numpy < 2",
+    "numpy",
     "scipy",
     "tabulate",
 ]
 
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 readme = "README.md"
 license = {text = "MIT"}
 keywords = [
@@ -30,8 +30,8 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Topic :: Software Development :: Build Tools",
 ]