diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index a555b27b363..cbee859eb75 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -206,9 +206,9 @@ in self: {
   };
 
   postgresql_11 = self.callPackage generic {
-    version = "11.8";
+    version = "11.9";
     psqlSchema = "11.1"; # should be 11, but changing it is invasive
-    sha256 = "1qksqyayxmnccmbapg3ajsw9pjgqva0inxjhx64rqd6ckhrg9wpa";
+    sha256 = "0db6pfphc5rp12abnkvv2l9pbl7bdyf3hhiwj8ghjwh35skqlq9m";
     this = self.postgresql_11;
     inherit self;
   };