diff --git a/.github/workflows/build-wheels.yml b/.github/workflows/build-wheels.yml
index f1d86945d..7d0847457 100644
--- a/.github/workflows/build-wheels.yml
+++ b/.github/workflows/build-wheels.yml
@@ -50,7 +50,7 @@ jobs:
       - name: Build sdist and wheel
         run: python -m build .
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: dist/*
 
@@ -59,7 +59,7 @@ jobs:
     needs: [build]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v4
         with:
           name: artifact
           path: dist
diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index 032bec747..1d8bd0461 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -53,7 +53,7 @@ jobs:
           make html
 
       - name: Upload documentation artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: doc-${{ matrix.os }}-${{ matrix.python-version }}
           path: doc/sphinx/build/html/
diff --git a/pyproject.toml b/pyproject.toml
index 9617fef89..468cd0a10 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,8 +5,8 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "fenics-ufl"
 version = "2023.3.0.dev0"
-authors = [{email="fenics-dev@googlegroups.com"}, {name="FEniCS Project"}]
-maintainers = [{email="fenics-dev@googlegroups.com"}, {name="FEniCS Project Steering Council"}]
+authors = [{name="UFL contributors"}]
+maintainers = [{email="fenics-steering-council@googlegroups.com"}, {name="FEniCS Steering Council"}]
 description = "Unified Form Language"
 readme = "README.rst"
 license = {file = "COPYING.lesser"}
diff --git a/ufl/operators.py b/ufl/operators.py
index 9dc5add03..78226d8a1 100644
--- a/ufl/operators.py
+++ b/ufl/operators.py
@@ -693,7 +693,7 @@ def exterior_derivative(f):
         except Exception:
             raise ValueError(f"Unable to determine element from {f}")
 
-    gdim = element.cell().geometric_dimension()
+    gdim = element.cell.geometric_dimension()
     space = element.sobolev_space
 
     if space == sobolevspace.L2: