diff --git a/scripts/model_keyword_support.py b/scripts/model_keyword_support.py
index 897eee8..3058c7f 100644
--- a/scripts/model_keyword_support.py
+++ b/scripts/model_keyword_support.py
@@ -24,7 +24,7 @@ def load_hash_cache():
 def update_hash_cache():
     global file_needs_update
     if file_needs_update:
-        with open(known_hashes_file, "w") as file:
+        with open(known_hashes_file, "w", encoding="utf-8") as file:
             for name, (hash, mtime) in hash_dict.items():
                 file.write(f"{name},{hash},{mtime}\n")