diff --git a/TODO.md b/TODO.md
index a1cb271..f0b7258 100644
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+++ b/TODO.md
@@ -11,6 +11,7 @@ Important
 Less important
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+- Compatibility PG 9.3-
 - specify tablespace
 - handle collation (and what 0 means for collation ?)
 - handle unique index ?