diff --git a/dev/archery/archery/integration/datagen.py b/dev/archery/archery/integration/datagen.py
index 9ef021e34f174..fe85dca7a3617 100644
--- a/dev/archery/archery/integration/datagen.py
+++ b/dev/archery/archery/integration/datagen.py
@@ -1759,8 +1759,8 @@ def generate_nested_dictionary_case():
 def generate_extension_case():
     dict0 = Dictionary(0, StringField('dictionary0'), size=5, name='DICT0')
 
-    uuid_type = ExtensionType('arrow.uuid', '',
-                              FixedSizeBinaryField('', 16))
+    uuid_type = ExtensionType('arrow-uuid', '',
+                              FixedSizeBinaryField('uuids', 16))
     dict_ext_type = ExtensionType(
         'dict-extension', 'dict-extension-serialized',
         DictionaryField('str_dict', get_field('', 'int8'), dict0))