diff --git a/20230109.md b/20230109.md
index 6eb0d909..497ea4db 100644
--- a/20230109.md
+++ b/20230109.md
@@ -145,6 +145,7 @@ sum([i ** 2 for i in range(100) if i % 7 == 0])
 ```python []
 list(itertools.combinations([1,2,3,4], 3))
 # [(1, 2, 3), (1, 2, 4), (1, 3, 4), (2, 3, 4)]
+```
 
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