diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 1d1766c17e..bb7203e6ba 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -64,7 +64,6 @@ jobs:
         run: |
           pip install uv
           uv pip install -r requirements.txt
-          uv pip install fsspec s3fs
 
       # We have two cores so we can speed up the testing with xdist
       - name: Install pytest packages
diff --git a/python/lsst/daf/butler/registry/obscore/_records.py b/python/lsst/daf/butler/registry/obscore/_records.py
index bbd29bfadf..0e9eb40ac3 100644
--- a/python/lsst/daf/butler/registry/obscore/_records.py
+++ b/python/lsst/daf/butler/registry/obscore/_records.py
@@ -181,10 +181,10 @@ def __call__(self, ref: DatasetRef) -> Record | None:
         if timespan is not None:
             if timespan.begin is not None:
                 t_min = cast(astropy.time.Time, timespan.begin)
-                record["t_min"] = t_min.mjd
+                record["t_min"] = float(t_min.mjd)
             if timespan.end is not None:
                 t_max = cast(astropy.time.Time, timespan.end)
-                record["t_max"] = t_max.mjd
+                record["t_max"] = float(t_max.mjd)
 
         region = dataId.region
         if self.exposure.name in dataId:
diff --git a/requirements/main.in b/requirements/main.in
index 05bbd51395..df560d7734 100644
--- a/requirements/main.in
+++ b/requirements/main.in
@@ -6,9 +6,7 @@ pydantic >=2,<3.0
 deprecated >=1.2
 pyarrow >= 0.16
 psycopg2
-
-# Numpy 2 is not supported by the stack yet.
-numpy < 2
+numpy
 
 # Butler CLI dependencies
 click >7.0
diff --git a/requirements/test.in b/requirements/test.in
index 9634b269c5..7e23fd7e71 100644
--- a/requirements/test.in
+++ b/requirements/test.in
@@ -1,5 +1,7 @@
 matplotlib >= 3.0.3
 moto >= 1.3
-numpy >= 1.17, <2
+numpy >= 1.17
 pandas >= 1.0
 testing.postgresql
+s3fs
+fsspec