diff --git a/openeo_processes_dask/process_implementations/cubes/aggregate.py b/openeo_processes_dask/process_implementations/cubes/aggregate.py
index 2729001..56356a6 100644
--- a/openeo_processes_dask/process_implementations/cubes/aggregate.py
+++ b/openeo_processes_dask/process_implementations/cubes/aggregate.py
@@ -76,7 +76,7 @@ def aggregate_temporal(
     labels_nans = labels_nans[~mask]
 
     intervals_flat = np.unique(intervals_flat)
-    data[t] = data[t].values.astype("float")
+    data[t] = np.datetime64(data[t].values).astype("float")
     grouped_data = data.groupby_bins(t, bins=intervals_flat)
     positional_parameters = {"data": 0}
     groups = grouped_data.reduce(
@@ -84,7 +84,7 @@ def aggregate_temporal(
     )
     groups[t + "_bins"] = labels_nans
     data_agg_temp = groups.sel({t + "_bins": labels})
-    data_agg_temp = data_agg_temp.rename(t + "_bins", t)
+    data_agg_temp = data_agg_temp.rename({t + "_bins": t})
 
     return data_agg_temp
 
diff --git a/tests/test_aggregate.py b/tests/test_aggregate.py
index a531f71..1e5c81b 100644
--- a/tests/test_aggregate.py
+++ b/tests/test_aggregate.py
@@ -17,7 +17,7 @@
 @pytest.mark.parametrize("size", [(6, 5, 100, 4)])
 @pytest.mark.parametrize("dtype", [np.float64])
 @pytest.mark.parametrize(
-    "temporal_extent,intervals,expected",
+    "temporal_extent,intervals,labels, expected",
     [
         (
             ["2018-01-01", "2019-01-01"],
@@ -25,6 +25,7 @@
                 ["2018-01-01T12:00:00", "2018-06-01T12:00:00"],
                 ["2018-07-01T12:00:00", "2018-12-01T12:00:00"],
             ],
+            ["half-1", "half-2"],
             2,
         )
     ],