diff --git a/docs/examples/japanese_extraction.md b/docs/examples/japanese_extraction.md
index fd4d26e6..a92a9c3a 100644
--- a/docs/examples/japanese_extraction.md
+++ b/docs/examples/japanese_extraction.md
@@ -51,7 +51,7 @@ for entity in result.extractions:
     if entity.char_interval:
         start, end = entity.char_interval.start_pos, entity.char_interval.end_pos
         position_info = f" (pos: {start}-{end})"
-    
+
     print(f"• {entity.extraction_class}: {entity.extraction_text}{position_info}")
 
 # Expected Output:
diff --git a/langextract/providers/gemini.py b/langextract/providers/gemini.py
index 24f74695..d4bdb33a 100644
--- a/langextract/providers/gemini.py
+++ b/langextract/providers/gemini.py
@@ -399,7 +399,13 @@ def infer(
       if key in merged_kwargs:
         config[key] = merged_kwargs[key]
 
-    handled_keys = {'temperature', 'max_output_tokens', 'top_p', 'top_k'}
+    handled_keys = {
+        'temperature',
+        'max_output_tokens',
+        'top_p',
+        'top_k',
+        'thinking_config',
+    }
     for key, value in merged_kwargs.items():
       if (
           key not in handled_keys