diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a50c2833..082752c6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -179,8 +179,9 @@ jobs:
     - name: Generate coverage report
       run: |
         python3 -m pytest tests/unittests --cov=tests --cov-report=xml
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
+        token: ae13d715-bae4-4e6d-9dce-f47e7d7c7c01
         flags: unittests # optional
         fail_ci_if_error: true # optional (default = false)
         verbose: true # optional (default = false)
diff --git a/AUTHORS.rst b/AUTHORS.rst
index 58574aa9..44e8399d 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -1,4 +1,5 @@
-Jeet Sukumaran <jeetsukumaran@gmail.com>
-Mark T. Holder <mtholder@ku.edu>
+- Jeet Sukumaran <jeetsukumaran@gmail.com>
+- Mark T. Holder <mtholder@ku.edu>
+- Matthew Andres Moreno <morenoma@umich.edu>
 
 Find a comprehensive, up-to-date listing of project contributors `here <https://github.com/jeetsukumaran/DendroPy/graphs/contributors>`_.
diff --git a/README.rst b/README.rst
index b85c0ec1..9b6da782 100644
--- a/README.rst
+++ b/README.rst
@@ -7,11 +7,11 @@
    :target: https://github.com/jeetsukumaran/DendroPy
    :alt: DendroPy wordmark
 
-+--------------------+-+---------------------+-+---------------------+
-| *automated tests:* | | *package version:*  | | *documentation:*    |
-|                    | |                     | |                     |
-| |CI|               | | |PyPI|              | | |Docs|              |
-+--------------------+-+---------------------+-+---------------------+
++--------------------+-+---------------------+-+---------------------+-+-------------------+
+| *automated tests:* | | *package version:*  | | *documentation:*    | | *test coverage:*  |
+|                    | |                     | |                     | |                   |
+| |CI|               | | |PyPI|              | | |Docs|              | | |Coverage|        |
++--------------------+-+---------------------+-+---------------------+-+-------------------+
 
 .. |CI| image:: https://github.com/jeetsukumaran/DendroPy/actions/workflows/ci.yaml/badge.svg
    :target: https://github.com/jeetsukumaran/DendroPy/actions/workflows/ci.yaml
@@ -22,7 +22,10 @@
 .. |Docs| image:: https://github.com/jeetsukumaran/DendroPy/actions/workflows/pages/pages-build-deployment/badge.svg
    :target: https://jeetsukumaran.github.io/DendroPy/
    :alt: Documentation Status
-.. |nbsp| unicode:: 0xA0 
+.. |Coverage| image:: https://codecov.io/gh/jeetsukumaran/DendroPy/graph/badge.svg?token=JwMfFOpBBD
+   :target: https://codecov.io/gh/jeetsukumaran/DendroPy
+   :alt: codecov coverage
+.. |nbsp| unicode:: 0xA0
    :trim:
 
 .. raw:: html
@@ -79,6 +82,13 @@ This includes:
 
 and more.
 
+Citing
+======
+
+If you use this library or any portion thereof in published work, please cite it as:
+
+      Sukumaran, J. and M. T. Holder. 2010. DendroPy: a Python library for phylogenetic computing. Bioinformatics 26: 1569-1571.
+
 License and Warranty
 ====================
 
diff --git a/src/dendropy/application/sumlabels.py b/src/dendropy/application/sumlabels.py
index 9ce31432..29f87e86 100644
--- a/src/dendropy/application/sumlabels.py
+++ b/src/dendropy/application/sumlabels.py
@@ -18,7 +18,7 @@
 ##############################################################################
 
 """
-Marge labels of splits/branches from different input trees onto corresponding
+Merge labels of splits/branches from different input trees onto corresponding
 splits/branches of a single tree.
 """