diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 16f08e3..c83850c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -67,10 +67,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - name: Set up Python 3.8
+      - name: Set up Python 3.11
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: 3.11
       - name: Install tox
         run: |
           python -m pip install --upgrade pip
diff --git a/MANIFEST.in b/MANIFEST.in
index 19a62f2..cb99df4 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1 @@
-include RELIC-INFO
 exclude stwcs/version.py
diff --git a/doc/rtd_requirements.yaml b/doc/rtd_requirements.yaml
index 3db3133..c1512bc 100644
--- a/doc/rtd_requirements.yaml
+++ b/doc/rtd_requirements.yaml
@@ -6,4 +6,4 @@ dependencies:
  - astropy
  - pip
  - graphviz
-
+ - sphinx_rtd_theme>1.2.0
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6c323d1..9b18616 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -15,6 +15,7 @@
 import importlib
 # Check Sphinx version
 import sphinx
+import sphinx_rtd_theme
 
 
 # If extensions (or modules to document with autodoc) are in another directory,
diff --git a/setup.cfg b/setup.cfg
index e6f9d08..1d7c88f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -10,7 +10,7 @@ github_project = spacetelescope/stwcs
 
 [tool:pytest]
 minversion = 3.9
-norecursedirs = build docs/_build relic
+norecursedirs = build docs/_build
 filterwarnings=
   ignore:.*Card is too long*
   ignore:.*Some non-standard WCS keywords*
@@ -22,6 +22,11 @@ filterwarnings=
 builder = html
 warning-is-error = 1
 
+[docs]
+docs =
+    sphinx
+    sphinx-rtd-theme
+
 [flake8]
 # E402, E501, E722 should be added back to the selection list
 # once they are made to pass.
diff --git a/stwcs/tests/test_updatewcs.py b/stwcs/tests/test_updatewcs.py
index b227e99..c6bc51b 100644
--- a/stwcs/tests/test_updatewcs.py
+++ b/stwcs/tests/test_updatewcs.py
@@ -1,8 +1,10 @@
 import shutil
 import os
+import warnings
 
 from astropy import wcs
 from astropy.io import fits
+from astropy.wcs import FITSFixedWarning
 from .. import updatewcs
 from ..updatewcs import apply_corrections
 from ..distortion import utils as dutils
@@ -11,8 +13,9 @@
 from numpy import testing
 import pytest
 
-
 from . import data
+
+
 data_path = os.path.split(os.path.abspath(data.__file__))[0]
 
 os.environ['ASTROMETRY_STEP_CONTROL'] = 'Off'
@@ -464,6 +467,9 @@ def test_update_stis_asn():
     shutil.copyfile(stis_asn_orig_file, fname)
     shutil.copyfile(idc_orig_file, idctab)
 
+    warnings.simplefilter("ignore", category=FITSFixedWarning)#,
+                          #  message=" 'datfix' made the change 'Set MJD-OBS to 50853.000000 from DATE-OBS'.")
+
     expnames = updatewcs.updatewcs(fname)
 
     assert expnames[0] == os.path.basename(fname_expname1)
diff --git a/stwcs/updatewcs/corrections.py b/stwcs/updatewcs/corrections.py
index 7dec568..67349c1 100644
--- a/stwcs/updatewcs/corrections.py
+++ b/stwcs/updatewcs/corrections.py
@@ -348,8 +348,8 @@ def updateWCS(cls, ext_wcs, ref_wcs):
                 if n >= m and n >= 2:
                     idcval = np.array([[cx[n, m]], [cy[n, m]]])
                     sipval = np.dot(imatr, idcval)
-                    akeys1[m, n - m] = sipval[0]
-                    bkeys1[m, n - m] = sipval[1]
+                    akeys1[m, n - m] = sipval[0].item()
+                    bkeys1[m, n - m] = sipval[1].item()
                     Akey = "A_%d_%d" % (m, n - m)
                     Bkey = "B_%d_%d" % (m, n - m)
                     kw2update[Akey] = sipval[0, 0] * ext_wcs.binned, sip_comment