diff --git a/debian/changelog b/debian/changelog
index f25ed43..b18717e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@
 
   * New upstream version with PostgreSQL 10 support.
   * B-D on libicu-dev for PostgreSQL 10 support, utils/pg_locale.h wants it.
+  * Bump minimum supported version to 9.3 (needs pg_class.relispopulated).
 
  -- Christoph Berg <myon@debian.org>  Fri, 13 Oct 2017 19:47:45 +0200
 
diff --git a/debian/pgversions b/debian/pgversions
index 8c57e3f..ea948d6 100644
--- a/debian/pgversions
+++ b/debian/pgversions
@@ -1,2 +1,2 @@
-# needs varchar_transform
-9.2+
+# needs pg_class.relispopulated
+9.3+