diff --git a/python/src/fds/protobuf/stach/extensions/v2/RowOrganizedStachExtension.py b/python/src/fds/protobuf/stach/extensions/v2/RowOrganizedStachExtension.py
index 9a51918..0b94397 100644
--- a/python/src/fds/protobuf/stach/extensions/v2/RowOrganizedStachExtension.py
+++ b/python/src/fds/protobuf/stach/extensions/v2/RowOrganizedStachExtension.py
@@ -73,7 +73,7 @@ def __generate_table(table):
                         header.extend(rowSpannedHeader)
                     for val in currentRow.cells:
 
-                        headerCellDetail = list(currentRow.header_cell_details._values.values())[index]
+                        headerCellDetail = list(currentRow.header_cell_details.values())[index]
                         colspan = headerCellDetail.colspan
                         colspan = 1 if colspan <= 1 else colspan
                         rowspan = headerCellDetail.rowspan
diff --git a/python/src/setup.py b/python/src/setup.py
index 9d4fe1a..6567bfb 100644
--- a/python/src/setup.py
+++ b/python/src/setup.py
@@ -4,7 +4,7 @@
 
 setuptools.setup(
     name="fds.protobuf.stach.extensions",
-    version="1.3.2",
+    version="1.3.3",
     author="Analytics API",
     author_email="analytics.api.support@factset.com",
     description="FactSet stach extensions",
@@ -14,5 +14,5 @@
     install_requires=REQUIRES,
     include_package_data=True,
     license="Apache License 2.0",
-    python_requires=">=3.6",
+    python_requires=">=3.9",
 )
diff --git a/python/tests/requirements.txt b/python/tests/requirements.txt
index 08c68c0..22b1f0e 100644
--- a/python/tests/requirements.txt
+++ b/python/tests/requirements.txt
@@ -1,12 +1,12 @@
 astroid==2.7.3
 colorama==0.4.4
-fds.protobuf.stach==1.0.0
-fds.protobuf.stach.v2==1.0.2
+fds.protobuf.stach==1.0.1
+fds.protobuf.stach.v2==1.0.4
 isort==5.9.3
 lazy-object-proxy==1.6.0
 mccabe==0.6.1
 platformdirs==2.3.0
-protobuf==3.16.0
+protobuf==6.32.0
 pylint==2.10.2
 python-dateutil==2.8.2
 pytz==2021.1