diff --git a/.github/workflows/test-build.yaml b/.github/workflows/test-build.yaml
index 4a40c4b..d71a579 100644
--- a/.github/workflows/test-build.yaml
+++ b/.github/workflows/test-build.yaml
@@ -23,10 +23,7 @@ jobs:
           python -m pip install --upgrade -r requirements.txt
 
       - name: Build docs
-        # Temporarily ignore deprecation warnings until fixed:
-        # 'DeprecationWarning: 'imghdr' is deprecated and slated for removal in Python 3.13'
-        # https://github.com/sphinx-doc/sphinx/issues/10440
-        run: python -bb -X dev -W error -W ignore::DeprecationWarning -m sphinx --color -n -E -a -W --keep-going docs build
+        run: python -bb -X dev -W error -m sphinx --color -n -E -a -W --keep-going docs build
 
       - name: Check links
         run: python -b -X dev -m sphinx --color -b linkcheck -W --keep-going docs build