diff --git a/doc/sphinx/requirements.txt b/doc/sphinx/requirements.txt
index 8128dde64e..092b1786ce 100644
--- a/doc/sphinx/requirements.txt
+++ b/doc/sphinx/requirements.txt
@@ -1,5 +1,8 @@
 -r ../../requirements.txt
-sphinx
+# NOTE: Sphinx v9.0.0 introduced several breaking changes, including
+#       incompatibility with Sphinx multiversion project, see:
+# https://github.com/sphinx-contrib/multiversion/issues/201
+sphinx<9.0.0
 sphinx_rtd_theme
 nbsphinx
 ipython
diff --git a/skyllh/core/utils/analysis.py b/skyllh/core/utils/analysis.py
index f41677c2e4..d72b844434 100644
--- a/skyllh/core/utils/analysis.py
+++ b/skyllh/core/utils/analysis.py
@@ -104,7 +104,7 @@ def pointlikesource_to_data_field_array(
 
 
 def calculate_pval_from_trials(
-        ts_vals, ts_threshold, comp_operator='greater'):
+        ts_vals, ts_threshold, comp_operator='greater_equal'):
     """Calculates the percentage (p-value) of test-statistic trials that are
     above the given test-statistic critical value.
     In addition it calculates the standard deviation of the p-value assuming