diff --git a/.github/workflows/ci-jll.yml b/.github/workflows/ci-jll.yml
new file mode 100644
index 0000000..489f408
--- /dev/null
+++ b/.github/workflows/ci-jll.yml
@@ -0,0 +1,33 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  test-artifacts:
+    name: Artifact tests ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.9'
+        os:
+          - ubuntu-latest
+        arch:
+          - x64
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: ${{ matrix.version }}
+          arch: ${{ matrix.arch }}
+      - uses: actions/cache@v1
+        env:
+          cache-name: cache-artifacts
+        with:
+          path: ~/.julia/artifacts
+          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-test-${{ env.cache-name }}-
+            ${{ runner.os }}-test-
+            ${{ runner.os }}-
+      - uses: julia-actions/julia-buildpkg@latest
+      - uses: julia-actions/julia-runtest@latest
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 936ebb0..1db9161 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
         version:
           - '1.9'
         os:
-          - ubuntu-22.04
+          - ubuntu-latest
         arch:
           - x64
     steps:
diff --git a/.gitignore b/.gitignore
index 54794fb..3308b8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,10 +3,11 @@
 *.jl.mem
 .DS_Store
 /Manifest.toml
+/LocalPreferences.toml
 /deps/build.log
 /deps/deps.jl
 /dev/
 /docs/build/
 /docs/site/
 /gen/Manifest.toml
-
+/gen/LocalPreferences.toml
diff --git a/deps/build.jl b/deps/build.jl
index 4f70456..fea7252 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -40,8 +40,12 @@ if isdir(P4EST_DIR)
     end
 
     if (cmp(P4EST_LIB,"") == 0)
-    # Check P4EST_LIB (.../libp4est.so file) exists
-        P4EST_LIB = string(Libdl.find_library(P4EST_LIB_NAME,[P4EST_LIB_DIR,P4EST_ROOT_DIR]),".",Libdl.dlext)
+        # Check P4EST_LIB (.../libp4est.so file) exists
+        if P4EST_ARTIFACT
+            P4EST_LIB = P4est_jll.get_libp4est_path()
+        else
+            P4EST_LIB = string(Libdl.find_library(P4EST_LIB_NAME,[P4EST_LIB_DIR,P4EST_ROOT_DIR]),".",Libdl.dlext)
+        end
     end
 
     if isfile(P4EST_LIB)
@@ -61,7 +65,11 @@ if isdir(P4EST_DIR)
 else
     if (cmp(P4EST_LIB,"") == 0)
         # Check P4EST_LIB (.../libp4est.so file) exists
-        P4EST_LIB = string(Libdl.find_library(P4EST_LIB_NAME,[P4EST_LIB_DIR,P4EST_ROOT_DIR]),".",Libdl.dlext)
+        if P4EST_ARTIFACT
+            P4EST_LIB = P4est_jll.get_libp4est_path()
+        else
+            P4EST_LIB = string(Libdl.find_library(P4EST_LIB_NAME,[P4EST_LIB_DIR,P4EST_ROOT_DIR]),".",Libdl.dlext)
+        end
     end
 
     if isfile(P4EST_LIB)
diff --git a/test/.gitignore b/test/.gitignore
new file mode 100644
index 0000000..301e4a1
--- /dev/null
+++ b/test/.gitignore
@@ -0,0 +1,3 @@
+*.vtu
+*.pvtu
+*.visit
\ No newline at end of file
diff --git a/test/example_1.jl b/test/example_1.jl
index bd5d326..2807337 100644
--- a/test/example_1.jl
+++ b/test/example_1.jl
@@ -38,7 +38,7 @@ const search_point_fn_c = @cfunction(search_point_fn, Cint, (Ptr{p4est_t}, p4est
 # Main program
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 
 # Create a connectivity structure for the unit square.
 unitsquare_connectivity = p4est_connectivity_new_unitsquare()
diff --git a/test/example_2.jl b/test/example_2.jl
index d31cc88..b6cb3d5 100644
--- a/test/example_2.jl
+++ b/test/example_2.jl
@@ -26,7 +26,7 @@ const my_refine_c = @cfunction(my_refine, Cint, (Ptr{p4est_t}, p4est_topidx_t, P
 # Main program
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 
 # Create a connectivity structure for the unit square.
 unitsquare_connectivity = p4est_connectivity_new_unitsquare()
diff --git a/test/example_3.jl b/test/example_3.jl
index 2a9b9cd..d561a2c 100644
--- a/test/example_3.jl
+++ b/test/example_3.jl
@@ -119,7 +119,7 @@ end
 # Main program
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 sc_init(mpicomm, Cint(true), Cint(true), C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 p4est_init(C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 
diff --git a/test/example_lnodes_2d+1d.jl b/test/example_lnodes_2d+1d.jl
index 2331b70..1a1b532 100644
--- a/test/example_lnodes_2d+1d.jl
+++ b/test/example_lnodes_2d+1d.jl
@@ -355,7 +355,7 @@ end
 # # Main program
 # #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 sc_init(mpicomm, Cint(true), Cint(true), C_NULL, P4est_wrapper.SC_LP_VERBOSE)
 p4est_init(C_NULL, P4est_wrapper.SC_LP_VERBOSE)
 
diff --git a/test/example_lnodes_2d.jl b/test/example_lnodes_2d.jl
index 151de3e..52854f4 100644
--- a/test/example_lnodes_2d.jl
+++ b/test/example_lnodes_2d.jl
@@ -73,7 +73,7 @@ end
 # Main program
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 sc_init(mpicomm, Cint(true), Cint(true), C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 p4est_init(C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 
diff --git a/test/example_lnodes_3d.jl b/test/example_lnodes_3d.jl
index 72d6085..d9b947a 100644
--- a/test/example_lnodes_3d.jl
+++ b/test/example_lnodes_3d.jl
@@ -332,7 +332,7 @@ end
 # Main program
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 sc_init(mpicomm, Cint(true), Cint(true), C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 p4est_init(C_NULL, P4est_wrapper.SC_LP_DEFAULT)
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 3e4622c..aa2aa7d 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -6,7 +6,7 @@ using Test
 # Skip tests if library was not properly loaded
 if P4est_wrapper.P4EST_FOUND
     repodir = normpath(joinpath(@__DIR__,".."))
-    nprocs = min(Sys.CPU_THREADS, 2)
+    nprocs = P4est_wrapper.P4EST_ENABLE_MPI ? min(Sys.CPU_THREADS, 2) : 1
     dir = dirname(@__FILE__)
     julia = Base.julia_cmd()
     mpiexec = MPI.mpiexec()
@@ -16,7 +16,7 @@ if P4est_wrapper.P4EST_FOUND
        extra_args = ``
     end
     @testset "Test SC bindings" begin
-	cmd = `$mpiexec -n $nprocs $(extra_args) $(julia) --project=$repodir $(joinpath(dir, "test_sc_bindings.jl"))`
+	    cmd = `$mpiexec -n $nprocs $(extra_args) $(julia) --project=$repodir $(joinpath(dir, "test_sc_bindings.jl"))`
         @show cmd
         run(cmd)
     end
diff --git a/test/test_p4est_bindings.jl b/test/test_p4est_bindings.jl
index 379804a..30963c1 100644
--- a/test/test_p4est_bindings.jl
+++ b/test/test_p4est_bindings.jl
@@ -11,7 +11,7 @@ end
 # Definition of data structures and function callbacks
 #############################################################################
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 
 # Dummy callback
 dummy_callback( ::Ptr{p4est_t}, which_tree::p4est_topidx_t, quadrant::Ptr{p4est_quadrant_t}) = Cint(0)
diff --git a/test/test_p8est_bindings.jl b/test/test_p8est_bindings.jl
index 749aca8..31aae6e 100644
--- a/test/test_p8est_bindings.jl
+++ b/test/test_p8est_bindings.jl
@@ -10,7 +10,7 @@ end
 #############################################################################
 # Definition of data structures and function callbacks
 #############################################################################
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 
 # Dummy callback
 dummy_callback( ::Ptr{p8est_t}, which_tree::p4est_topidx_t, quadrant::Ptr{p8est_quadrant_t}) = Cint(0)
diff --git a/test/test_sc_bindings.jl b/test/test_sc_bindings.jl
index 8c287a3..c16a957 100644
--- a/test/test_sc_bindings.jl
+++ b/test/test_sc_bindings.jl
@@ -10,7 +10,7 @@ if !MPI.Initialized()
     MPI.Init()
 end
 
-mpicomm = P4est_wrapper.P4EST_ENABLE_MPI ? MPI.COMM_WORLD : Cint(0)
+mpicomm = MPI.COMM_WORLD
 
 # SC library initialization
 sc_init(mpicomm, Cint(true), Cint(true), C_NULL, P4est_wrapper.SC_LP_DEFAULT)