diff --git a/tests/flattening/compare.py b/tests/flattening/compare.py
index 7d505f822..d5be973b1 100644
--- a/tests/flattening/compare.py
+++ b/tests/flattening/compare.py
@@ -103,7 +103,7 @@ def summary_delta(row):
     df_s = (
         df.drop(["difference", "change", "modified"], axis=1)
         .groupby(by=["statistic"])
-        .sum()
+        .sum(numeric_only=True)
         .reset_index(level=0)
         .sort_values(by="statistic")
     )
diff --git a/tests/flattening/requirements.txt b/tests/flattening/requirements.txt
index f90e33d1b..5535552ca 100644
--- a/tests/flattening/requirements.txt
+++ b/tests/flattening/requirements.txt
@@ -1,2 +1,2 @@
-pandas==1.2.*
-tabulate==0.8.*
+pandas==2.2.*
+tabulate==0.9.*