diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 5615dd1..d044dc6 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -44,6 +44,10 @@ jobs:
         exclude:
           - python-version: "3.8"
             sphinx-version: "7.2.*"
+          - python-version: "3.8"
+            sphinx-version: "8.0.*"
+          - python-version: "3.9"
+            sphinx-version: "8.0.*"
 
     steps:
     - uses: actions/checkout@v2
@@ -61,17 +65,25 @@ jobs:
         
         SPHINX=Sphinx
         JINJA2=jinja2
-        APPLEHELP=sphinxcontrib-applehelp
+        
+        SPHINXCONTRIB_PINNED="sphinxcontrib-applehelp<1.0.8 "
+        SPHINXCONTRIB_PINNED+="sphinxcontrib-devhelp<1.0.6 "
+        SPHINXCONTRIB_PINNED+="sphinxcontrib-htmlhelp<2.0.5 "
+        SPHINXCONTRIB_PINNED+="sphinxcontrib-jsmath<1.0.1 "
+        SPHINXCONTRIB_PINNED+="sphinxcontrib-qthelp<1.0.7 "
+        SPHINXCONTRIB_PINNED+="sphinxcontrib-serializinghtml<1.1.10 "
+        
+        EXTRAS=""
         
         if [[ $SPHINX_VERSION != "" ]]; then
           SPHINX="${SPHINX}==${SPHINX_VERSION}";
           JINJA2="${JINJA2}<3.1";
         fi
-        if [[ $SPHINX_VERSION == 3* ]] || [[ $SPHINX_VERSION == 4* ]]; then
-          APPLEHELP="${APPLEHELP}<2.0";
+        if [[ $SPHINX_VERSION == 3* || $SPHINX_VERSION == 4* ]]; then
+          EXTRAS="{$SPHINXCONTRIB_PINNED}";
         fi
         
-        pip install pytest pytest-cov codecov "${SPHINX}" "${JINJA2}" "${APPLEHELP}" beautifulsoup4 -e .
+        pip install pytest pytest-cov codecov "${SPHINX}" "${JINJA2}" "${EXTRAS}" beautifulsoup4 -e .
     - name: Test with pytest
       run: |
         pytest --cov=autodocsumm --cov-report=xml tests