diff --git a/mapillary_tools/geotag/geotag_images_from_gpx.py b/mapillary_tools/geotag/geotag_images_from_gpx.py
index 5e0b9317..2ec0b9d2 100644
--- a/mapillary_tools/geotag/geotag_images_from_gpx.py
+++ b/mapillary_tools/geotag/geotag_images_from_gpx.py
@@ -20,12 +20,6 @@
 LOG = logging.getLogger(__name__)
 
 
-class SyncMode:
-    SYNC = "sync"
-    STRICT_SYNC = "strict_sync"
-    RESET = "reset"
-
-
 class GeotagImagesFromGPX(GeotagImagesFromGeneric):
     def __init__(
         self,
diff --git a/pyproject.toml b/pyproject.toml
index 110fcb4e..8c5939ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,11 +29,11 @@ classifiers = [
 ]
 dependencies = [
     "appdirs>=1.4.4,<2.0.0",
-    "construct>=2.10.0,<3.0.0",
-    "exifread==2.3.2",
-    "gpxpy>=1.5.0,<1.6.0",
-    "jsonschema~=4.17.3",
-    "piexif==1.1.3",
+    "construct~=2.10.0",
+    "exifread~=3.0",
+    "gpxpy~=1.6.0",
+    "jsonschema~=4.17.0",
+    "piexif~=1.1",
     "pynmea2>=1.12.0,<2.0.0",
     "requests[socks]>=2.20.0,<3.0.0",
     "tqdm>=4.0,<5.0",
diff --git a/tests/integration/test_process.py b/tests/integration/test_process.py
index 59335bd2..8bc6e99a 100644
--- a/tests/integration/test_process.py
+++ b/tests/integration/test_process.py
@@ -347,22 +347,22 @@ def test_process_boolean_options(setup_data: py.path.local):
         <trkseg>
             <trkpt lat="0.02" lon="0.01">
             <ele>1</ele>
-            <time>2018-06-08T20:23:34.805</time>
+            <time>2018-06-08T20:23:34.805Z</time>
             </trkpt>
 
             <trkpt lat="2.02" lon="0.01">
             <ele>2</ele>
-            <time>2018-06-08T20:24:35.809</time>
+            <time>2018-06-08T20:24:35.809Z</time>
             </trkpt>
 
             <trkpt lat="2.02" lon="2.01">
             <ele>4</ele>
-            <time>2018-06-08T20:33:36.813</time>
+            <time>2018-06-08T20:33:36.813Z</time>
             </trkpt>
 
             <trkpt lat="4.02" lon="2.01">
             <ele>9</ele>
-            <time>2018-06-08T20:58:37.812</time>
+            <time>2018-06-08T20:58:37.812Z</time>
             </trkpt>
         </trkseg>
     </trk>