diff --git a/.github/workflows/publish-windows.yml b/.github/workflows/publish-windows.yml
index f09a846c8..57cd39e6a 100644
--- a/.github/workflows/publish-windows.yml
+++ b/.github/workflows/publish-windows.yml
@@ -49,7 +49,7 @@ jobs:
       run: |
         python configure.py dist --code-sign-cert-path $env:CODE_SIGN_CERT_PATH
     - name: Upload Setup File
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Setup
         path: dist\*.exe
diff --git a/.github/workflows/test-build-prs.yaml b/.github/workflows/test-build-prs.yaml
index 092c34466..ddc127620 100644
--- a/.github/workflows/test-build-prs.yaml
+++ b/.github/workflows/test-build-prs.yaml
@@ -81,7 +81,7 @@ jobs:
       run: |
         python configure.py dist
     - name: Upload Setup File
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Setup
         path: dist\*.exe
diff --git a/VERSION b/VERSION
index 444877d48..65afb3b88 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.5.3
+3.5.4
diff --git a/opendm/shots.py b/opendm/shots.py
index 2d8ae23fb..b6eeeb302 100644
--- a/opendm/shots.py
+++ b/opendm/shots.py
@@ -148,3 +148,16 @@ def merge_geojson_shots(geojson_shots_files, output_geojson_file):
     
     with open(output_geojson_file, "w") as f:
         f.write(json.dumps(result))
+
+def merge_cameras(cameras_json_files, output_cameras_file):
+    result = {}
+    for cameras_file in cameras_json_files:
+        with open(cameras_file, "r") as f:
+            cameras = json.loads(f.read())
+        
+        for cam_id in cameras:
+            if not cam_id in result:
+                result[cam_id] = cameras[cam_id]
+    
+    with open(output_cameras_file, "w") as f:
+        f.write(json.dumps(result))
diff --git a/stages/splitmerge.py b/stages/splitmerge.py
index 80e130978..944a6052a 100644
--- a/stages/splitmerge.py
+++ b/stages/splitmerge.py
@@ -15,7 +15,7 @@
 from opendm.cropper import Cropper
 from opendm.concurrency import get_max_memory
 from opendm.remote import LocalRemoteExecutor
-from opendm.shots import merge_geojson_shots
+from opendm.shots import merge_geojson_shots, merge_cameras
 from opendm import point_cloud
 from opendm.utils import double_quote
 from opendm.tiles.tiler import generate_dem_tiles
@@ -337,6 +337,15 @@ def merge_dems(dem_filename, human_name):
             else:
                 log.ODM_WARNING("Found merged shots.geojson in %s" % tree.odm_report)
 
+            # Merge cameras
+            cameras_json = tree.path("cameras.json")
+            if not io.file_exists(cameras_json) or self.rerun():
+                cameras_json_files = get_submodel_paths(tree.submodels_path, "cameras.json")
+                log.ODM_INFO("Merging %s cameras.json files" % len(cameras_json_files))
+                merge_cameras(cameras_json_files, cameras_json)
+            else:
+                log.ODM_WARNING("Found merged cameras.json in %s" % tree.root_path)
+
             # Stop the pipeline short by skipping to the postprocess stage.
             # Afterwards, we're done.
             self.next_stage = self.last_stage()