diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b48c3a98..6b4f1e7a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,6 +34,9 @@ jobs:
           - name: x86_64-darwin
             image: macos-13
             arch: x86_64
+          - name: universal64-darwin
+            image: macos-13
+            arch: x86_64
           - name: aarch64-darwin
             image: macos-13
             arch: aarch64
@@ -91,6 +94,10 @@ jobs:
       with:
         name: x86_64-darwin
         path: dist-x86_64-darwin
+    - uses: actions/download-artifact@v4
+      with:
+        name: universal64-darwin
+        path: dist-universal64-darwin
     - uses: actions/download-artifact@v4
       with:
         name: aarch64-darwin
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6db01f90..cd2adf62 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -71,6 +71,8 @@ else ()
 
   if ("${FMI_ARCHITECTURE}" STREQUAL "x86_64")
     set (FMI_PLATFORM ${FMI_PLATFORM}64)
+  elseif ("${FMI_ARCHITECTURE}" STREQUAL "universal64")
+    set (FMI_PLATFORM ${FMI_PLATFORM}64)
   elseif ("${FMI_ARCHITECTURE}" STREQUAL "x86")
     set (FMI_PLATFORM ${FMI_PLATFORM}32)
   else ()
@@ -85,6 +87,8 @@ if (APPLE)
     set(CMAKE_OSX_ARCHITECTURES "x86_64")
   elseif ("${FMI_ARCHITECTURE}" STREQUAL "aarch64")
     set(CMAKE_OSX_ARCHITECTURES "arm64")
+  elseif ("${FMI_ARCHITECTURE}" STREQUAL "universal64")
+    set(CMAKE_OSX_ARCHITECTURES "arm64;x86_64")
   else ()
     message(FATAL_ERROR "Unsupported architecture darwin: ${FMI_ARCHITECTURE}")
   endif ()
diff --git a/build/build.py b/build/build.py
index 02760f9c..3fa8a22c 100644
--- a/build/build.py
+++ b/build/build.py
@@ -12,7 +12,7 @@
 parser = argparse.ArgumentParser()
 parser.add_argument(
     'platform',
-    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin'},
+    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin', 'universal64-darwin'},
     help="Platform to build for, e.g. x86_64-windows"
 )
 parser.add_argument(
@@ -91,6 +91,9 @@ def build_fmus(fmi_version, fmi_type=None):
 
         cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64']
 
+    elif fmi_platform == 'universal64-darwin':
+        cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64;x86_64']
+
     install_dir = build_dir / 'install'
 
     if fmi_type is not None:
@@ -135,9 +138,9 @@ def build_fmus(fmi_version, fmi_type=None):
 
 if __name__ == '__main__':
 
-    if args.platform in {'x86_64-linux', 'x86-windows', 'x86_64-windows', 'x86_64-darwin'}:
+    if args.platform in {'x86_64-linux', 'x86-windows', 'x86_64-windows', 'x86_64-darwin', 'universal64-darwin'}:
         build_fmus(fmi_version=1, fmi_type='me')
         build_fmus(fmi_version=1, fmi_type='cs')
         build_fmus(fmi_version=2)
-
-    build_fmus(fmi_version=3)
+    if args.platform not in {'universal64-darwin'}:
+        build_fmus(fmi_version=3)
diff --git a/build/build_cvode.py b/build/build_cvode.py
index 8449821f..ceb12c89 100644
--- a/build/build_cvode.py
+++ b/build/build_cvode.py
@@ -8,7 +8,7 @@
 parser = argparse.ArgumentParser()
 parser.add_argument(
     'platform',
-    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin'},
+    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin', 'universal64-darwin'},
     help="Platform to build for, e.g. x86_64-windows"
 )
 parser.add_argument(
@@ -62,6 +62,10 @@
 
     cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64']
 
+elif fmi_platform == 'universal64-darwin':
+
+    cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64;x86_64']
+
 check_call(
     ['cmake'] +
     cmake_args +
diff --git a/build/build_libxml2.py b/build/build_libxml2.py
index 38c5b4fb..8315ff80 100644
--- a/build/build_libxml2.py
+++ b/build/build_libxml2.py
@@ -8,7 +8,7 @@
 parser = argparse.ArgumentParser()
 parser.add_argument(
     'platform',
-    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin'},
+    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin', 'universal64-darwin'},
     help="Platform to build for, e.g. x86_64-windows"
 )
 parser.add_argument(
@@ -60,6 +60,10 @@
 
     cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64']
 
+elif fmi_platform == 'universal64-darwin':
+
+    cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64;x86_64']
+
 check_call(
     ['cmake'] +
     cmake_args +
diff --git a/build/build_zlib.py b/build/build_zlib.py
index 7d942148..e82dd61d 100644
--- a/build/build_zlib.py
+++ b/build/build_zlib.py
@@ -7,7 +7,7 @@
 parser = argparse.ArgumentParser()
 parser.add_argument(
     'platform',
-    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin'},
+    choices={'x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin', 'universal64-darwin'},
     help="Platform to build for, e.g. x86_64-windows"
 )
 parser.add_argument(
@@ -63,6 +63,10 @@
 
     cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64']
 
+elif fmi_platform == 'universal64-darwin':
+
+    cmake_args += ['-D', 'CMAKE_OSX_ARCHITECTURES=arm64;x86_64']
+
 check_call(
     ['cmake'] +
     cmake_args +
diff --git a/build/merge_binaries.py b/build/merge_binaries.py
index db9c128f..c1ef62f9 100644
--- a/build/merge_binaries.py
+++ b/build/merge_binaries.py
@@ -94,10 +94,10 @@ def merge_fmus(version):
 
             tempdir = Path(mkdtemp())
 
-            platforms = ['x86-windows', 'x86_64-windows', 'x86_64-linux', 'x86_64-darwin']
-
             if version == '3.0':
-                platforms += ['aarch64-linux', 'aarch64-darwin']
+                platforms = ['x86-windows', 'x86_64-windows', 'x86_64-linux', 'x86_64-darwin', 'aarch64-linux', 'aarch64-darwin']
+            else:
+                platforms = ['x86-windows', 'x86_64-windows', 'x86_64-linux', 'universal64-darwin']
 
             for platform in platforms:
 
@@ -179,7 +179,7 @@ def get_unit(variable):
 os.makedirs(results_dir, exist_ok=True)
 
 # copy fmusim
-for system in ['x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin']:
+for system in ['x86-windows', 'x86_64-windows', 'x86_64-linux', 'aarch64-linux', 'x86_64-darwin', 'aarch64-darwin', 'universal64-darwin']:
     shutil.copytree(src=root / f'dist-{system}' / f'fmusim-{system}', dst=root / 'dist-merged' / f'fmusim-{system}')
 
 # copy license and readme
diff --git a/tests/test_fmusim.py b/tests/test_fmusim.py
index a4778936..0727921e 100644
--- a/tests/test_fmusim.py
+++ b/tests/test_fmusim.py
@@ -44,7 +44,8 @@ def call_fmusim(platform: str, fmi_version: int, interface_type: str, test_name:
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_start_time(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(platform, fmi_version, interface_type, 'test_start_time', ['--start-time', '0.5'])
@@ -55,7 +56,8 @@ def test_start_time(fmi_version, interface_type, arch, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_stop_time(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(platform, fmi_version, interface_type, 'test_stop_time', ['--stop-time', '1.5'])
@@ -66,7 +68,8 @@ def test_stop_time(fmi_version, interface_type, arch, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_set_stop_time(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(platform, fmi_version, interface_type, 'test_set_stop_time',
@@ -83,7 +86,8 @@ def test_set_stop_time(fmi_version, interface_type, arch, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_start_value_types(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     args = [
@@ -134,7 +138,9 @@ def test_start_value_types(fmi_version, interface_type, arch, platform):
 
 
 @pytest.mark.parametrize('interface_type', ['cs', 'me'])
-def test_start_value_arrays(work_dir, interface_type, platform):
+def test_start_value_arrays(work_dir, interface_type, arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     call_fmusim(
         platform=platform,
@@ -164,7 +170,8 @@ def test_start_value_arrays(work_dir, interface_type, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_input_file(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(
@@ -197,7 +204,9 @@ def test_input_file(fmi_version, interface_type, arch, platform):
     assert result['Int32_output'][-1] == 2
 
 
-def test_arrays(work_dir, platform):
+def test_arrays(work_dir, arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     call_fmusim(
         platform=platform,
@@ -227,7 +236,9 @@ def test_arrays(work_dir, platform):
 '''
 
 
-def test_collapsed_array(work_dir, platform):
+def test_collapsed_array(work_dir, arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     call_fmusim(
         platform=platform,
@@ -258,7 +269,8 @@ def test_collapsed_array(work_dir, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_fmi_log_file(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     fmi_log_file = work / f'test_fmi_log_file_fmi{fmi_version}_{interface_type}.txt'
@@ -277,7 +289,8 @@ def test_fmi_log_file(fmi_version, interface_type, arch, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_output_interval(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(
@@ -297,7 +310,8 @@ def test_output_interval(fmi_version, interface_type, arch, platform):
 @pytest.mark.parametrize('fmi_version, solver', product([1, 2, 3], ['euler', 'cvode']))
 def test_solver(fmi_version, solver, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     call_fmusim(
@@ -312,7 +326,8 @@ def test_solver(fmi_version, solver, arch, platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([1, 2, 3], ['cs', 'me']))
 def test_output_variable(fmi_version, interface_type, arch, platform):
 
-    if fmi_version in {1, 2} and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result = call_fmusim(
@@ -326,7 +341,9 @@ def test_output_variable(fmi_version, interface_type, arch, platform):
     assert set(result.dtype.names) == {'time', 'e', 'der(h)'}
 
 
-def test_intermediate_values(platform):
+def test_intermediate_values(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     result = call_fmusim(
         platform=platform,
@@ -339,7 +356,9 @@ def test_intermediate_values(platform):
     assert np.all(np.diff(result['time']) < 0.1)
 
 
-def test_early_return_state_events(platform):
+def test_early_return_state_events(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     result = call_fmusim(
         platform=platform,
@@ -354,7 +373,9 @@ def test_early_return_state_events(platform):
     assert np.sum(np.logical_and(time > 0, time < 0.5)) == 1
 
 
-def test_event_mode_input_events(platform):
+def test_event_mode_input_events(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     input_file = resources / 'Feedthrough_in.csv'
 
@@ -378,7 +399,9 @@ def test_event_mode_input_events(platform):
     assert np.all(result['Int32_output']              == [1, 1, 1, 1, 1, 1,   1, 2, 2])
 
 
-def test_event_mode_time_events(platform):
+def test_event_mode_time_events(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     result = call_fmusim(
         platform=platform,
@@ -401,7 +424,8 @@ def test_event_mode_time_events(platform):
 @pytest.mark.parametrize('fmi_version, interface_type', product([2, 3], ['cs', 'me']))
 def test_restore_fmu_state(fmi_version, interface_type, arch, platform):
 
-    if fmi_version == 2 and arch not in {'x86', 'x86_64'}:
+    if (fmi_version in {1, 2} and arch not in {'x86', 'x86_64', 'universal64'}) or \
+       (fmi_version in {3} and arch in {'universal64'}):
         pytest.skip(f"FMI version {fmi_version} is not supported on {arch}.")
 
     result1 = call_fmusim(
diff --git a/tests/test_targets.py b/tests/test_targets.py
index 2463f779..398c40e3 100644
--- a/tests/test_targets.py
+++ b/tests/test_targets.py
@@ -43,7 +43,7 @@ def validate(build_dir, model, fmi_types, simulate=True):
 
 def test_fmi1_me(arch, platform):
 
-    if arch not in {'x86', 'x86_64'}:
+    if arch not in {'x86', 'x86_64', 'universal64'}:
         pytest.skip(f"{arch} not supported")
 
     build_dir = root / 'build' / f'fmi1-me-{platform}'
@@ -59,7 +59,7 @@ def test_fmi1_me(arch, platform):
 
 def test_fmi1_cs(arch, platform):
 
-    if arch not in {'x86', 'x86_64'}:
+    if arch not in {'x86', 'x86_64', 'universal'}:
         pytest.skip(f"{arch} not supported")
 
     build_dir = root / 'build' / f'fmi1-cs-{platform}'
@@ -75,7 +75,7 @@ def test_fmi1_cs(arch, platform):
 
 def test_fmi2(arch, platform):
 
-    if arch not in {'x86', 'x86_64'}:
+    if arch not in {'x86', 'x86_64', 'universal64'}:
         pytest.skip(f"{arch} not supported")
 
     build_dir = root / 'build' / f'fmi2-{platform}'
@@ -93,6 +93,9 @@ def test_fmi2(arch, platform):
 
 def test_fmi3(arch, platform):
 
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
+
     build_dir = root / 'build' / f'fmi3-{platform}'
 
     models = ['BouncingBall', 'Dahlquist', 'Feedthrough', 'Resource', 'Stair', 'StateSpace', 'VanDerPol']
@@ -108,15 +111,23 @@ def test_fmi3(arch, platform):
     assert not validate_fmu(build_dir / 'install' / 'Clocks.fmu')
 
 
-def test_cs_early_return(platform):
+def test_cs_early_return(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
+
     run_example(root / 'build' / f'fmi3-{platform}' / 'temp' / 'cs_early_return')
 
 
-def test_cs_event_mode(platform):
+def test_cs_event_mode(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
+
     run_example(root / 'build' / f'fmi3-{platform}' / 'temp' / 'cs_event_mode')
 
 
-def test_cs_reconfiguration(platform):
+def test_cs_reconfiguration(arch, platform):
+    if arch in {'universal64'}:
+        pytest.skip(f"FMI version 3 is not supported on {arch}.")
 
     build_dir = root / 'build' / f'fmi3-{platform}' / 'temp'