diff --git a/asdf_astropy/converters/__init__.py b/asdf_astropy/converters/__init__.py
index 21c5d79..3334fa0 100644
--- a/asdf_astropy/converters/__init__.py
+++ b/asdf_astropy/converters/__init__.py
@@ -54,7 +54,7 @@
     SkyCoordConverter,
     SpectralCoordConverter,
 )
-from .fits import AsdfFitsConverter, AstropyFitsConverter, FitsConverter, FitsWCSConverter
+from .fits import AsdfFitsConverter, AstropyFitsConverter, FitsConverter
 from .nddata import UncertaintyConverter
 from .table import AsdfTableConverter, AstropyTableConverter, ColumnConverter, NdarrayMixinConverter
 from .time import TimeConverter, TimeDeltaConverter
diff --git a/asdf_astropy/extensions.py b/asdf_astropy/extensions.py
index e84884a..0bda058 100644
--- a/asdf_astropy/extensions.py
+++ b/asdf_astropy/extensions.py
@@ -12,9 +12,7 @@
 from .converters.coordinates.sky_coord import SkyCoordConverter
 from .converters.coordinates.spectral_coord import SpectralCoordConverter
 from .converters.fits.fits import AsdfFitsConverter, AstropyFitsConverter
-from .converters.fits.fitswcs import FitsWCSConverter
 from .converters.nddata.uncertainty import UncertaintyConverter
-from .converters.slicedwcs.slicedwcs import SlicedWCSConverter
 from .converters.table.table import AsdfTableConverter, AstropyTableConverter, ColumnConverter, NdarrayMixinConverter
 from .converters.time.time import TimeConverter
 from .converters.time.time_delta import TimeDeltaConverter