diff --git a/mario/dataset_splitter.py b/mario/dataset_splitter.py
index 29c8b9e..7ff0639 100644
--- a/mario/dataset_splitter.py
+++ b/mario/dataset_splitter.py
@@ -252,7 +252,7 @@ def split_excel_using_builder(self, file_name: str) -> None:
         # For each unique value, subset the data and create the output
         for value in values:
             logger.info(f"Splitting {file_name} for value {value}")
-            output_folder = os.path.join(self.output_path, value)
+            output_folder = os.path.join(self.output_path, str(value))
             os.makedirs(output_folder, exist_ok=True)
             output_path = os.path.join(output_folder, file_name)
             builder.filepath = output_path
diff --git a/setup.py b/setup.py
index e989d3a..8a64765 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='mario-pipeline-tools',
-    version='0.60',
+    version='0.61',
     packages=['mario'],
     url='https://github.com/JiscDACT/mario',
     license='all rights reserved',