diff --git a/requirements.txt b/requirements.txt
index acce36dea..561bfe57d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ packaging
 pandas
 pdmongo
 psutil
-pymongo<4.0
+pymongo
 scipy
 tqdm>=4.46.0
 zarr
diff --git a/tests/test_superruns.py b/tests/test_superruns.py
index b8ef96f1b..22af0d096 100644
--- a/tests/test_superruns.py
+++ b/tests/test_superruns.py
@@ -76,7 +76,7 @@ def test_run_meta_data(self):
 
         prev_start = datetime.datetime.min.replace(tzinfo=pytz.utc)
         for subrun_id in superrun_meta["sub_run_spec"]:
-            start = self.context.run_metadata(subrun_id)["start"]
+            start = self.context.run_metadata(subrun_id)["start"].replace(tzinfo=pytz.utc)
             assert start > prev_start, "Subruns should be sorted by run starts"
             prev_start = start