diff --git a/jwst/resample/resample_utils.py b/jwst/resample/resample_utils.py
index da917d7e41..ded0229789 100644
--- a/jwst/resample/resample_utils.py
+++ b/jwst/resample/resample_utils.py
@@ -163,14 +163,8 @@ def reproject(wcs1, wcs2):
     """
 
     try:
-        # Here we want to use the WCS API functions so that a Sliced WCS
-        # will work as well. However, the API functions do not accept
-        # keyword arguments and `with_bounding_box=False` cannot be passsed.
-        # We delete the bounding box on a copy of the WCS - yes, inefficient.
         forward_transform = wcs1.pixel_to_world_values
-        wcs_no_bbox = deepcopy(wcs2)
-        wcs_no_bbox.bounding_box = None
-        backward_transform = wcs_no_bbox.world_to_pixel_values
+        backward_transform = wcs2.world_to_pixel_values
     except AttributeError as err:
         raise TypeError("Input should be a WCS") from err
 
diff --git a/pyproject.toml b/pyproject.toml
index 12c5996d16..5892178d44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dependencies = [
     "scikit-image>=0.20.0",
     "scipy>=1.14.1",
     "spherical-geometry>=1.2.22",
-    "stcal @ git+https://github.com/spacetelescope/stcal.git@main",
+    "stcal @ git+https://github.com/mcara/stcal.git@fix-bbox-shift-make-wcs",
     "stdatamodels @ git+https://github.com/spacetelescope/stdatamodels.git@main",
     "stpipe @ git+https://github.com/spacetelescope/stpipe.git@main",
     "stsci.imagestats>=1.6.3",