diff --git a/test/test-patricia-trie.rb b/test/test-patricia-trie.rb
index a6812f23..5329a741 100644
--- a/test/test-patricia-trie.rb
+++ b/test/test-patricia-trie.rb
@@ -475,6 +475,7 @@ def test_added?
   end
 
   def test_defrag
+    need_groonga(14, 1, 3) # We'll fix this in 14.1.3.
     users = Groonga::PatriciaTrie.create(:name => "Users",
                                          :key_type => "ShortText")
     users.define_column("name", "ShortText")