diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index f116d345608..61c2a8c6aea 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -10,6 +10,7 @@ on:
   pull_request:
     branches:
       - main
+      - release
   merge_group:
     branches:
       - main
@@ -66,7 +67,7 @@ jobs:
           find . -type f \( -name "*.cmake" -o -name "*.cmake.in" -o -name "CMakeLists.txt" \) | xargs cmake-format --check
 
   ccpp-build:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-24.04-arm
     needs: [lint]
     env:
       OMPI_ALLOW_RUN_AS_ROOT: 1
@@ -159,7 +160,7 @@ jobs:
         run: mpirun -np 3 python -m pytest -m "not petsc4py and not adios2" python/test/unit
 
   ccpp-build-with-petsc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-arm
     needs: [lint]
     strategy:
       matrix:
@@ -197,6 +198,7 @@ jobs:
           pip install -Ccmake.build-type="Developer" --no-build-isolation git+https://github.com/${{ env.basix_repository }}.git@${{ env.basix_ref }}
           pip install --no-build-isolation git+https://github.com/${{ env.ffcx_repository }}.git@${{ env.ffcx_ref }}
 
+      # SuperLU_DIST is not built with PETSc complex64 so cannot force finding it here
       - name: Configure (C++)
         working-directory: cpp
         run: >
@@ -273,9 +275,9 @@ jobs:
         run: python -m pytest -m mpi --num-proc=3 python/demo/test.py
 
       - name: Run Python unit tests (serial)
-        run: python -m pytest -m "petsc4py or adios2" -n=auto --durations=50 python/test/unit/
+        run: python -m pytest -n=auto --durations=50 python/test/unit/
       - name: Run Python unit tests (MPI, np=3)
-        run: mpirun -np 3 python -m pytest -m "petsc4py or adios2" python/test/unit/
+        run: mpirun -np 3 python -m pytest python/test/unit/
 
   build-and-publish-docs:
     runs-on: ubuntu-latest