diff --git a/thermo_data/compile_to_bin.py b/thermo_data/compile_to_bin.py
index a50ff62..99fe6bc 100644
--- a/thermo_data/compile_to_bin.py
+++ b/thermo_data/compile_to_bin.py
@@ -1,6 +1,7 @@
 import yaml
 import struct
 import sys
+import os
 
 
 def main():
@@ -53,6 +54,9 @@ def main():
             offset += len(body)
             added_list.add(dat['name'])
 
+    # Ensure the output directory exists
+    os.makedirs(os.path.dirname(output_file), exist_ok=True)
+
     with open(output_file, 'wb') as f:
         f.write(b'gapy')
         f.write(struct.pack('<I', len(species_names)))