diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index 2b56c32d635..b8c06d5ec2f 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -113,12 +113,6 @@ let
 
 in {
 
-  postgresql_9_3 = common {
-    version = "9.3.25";
-    psqlSchema = "9.3";
-    sha256 = "1nxn0hjrg4y5v5n2jgzrbicgv4504r2yfjyk6g6rq0sx8603x5g4";
-  };
-
   postgresql_9_4 = common {
     version = "9.4.20";
     psqlSchema = "9.4";
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index b56640049d8..51916f3146e 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -234,7 +234,6 @@ mapAliases ({
   pltScheme = racket; # just to be sure
   pmtools = acpica-tools; # added 2018-11-01
   poppler_qt5 = libsForQt5.poppler;  # added 2015-12-19
-  postgresql93 = postgresql_9_3;
   postgresql94 = postgresql_9_4;
   postgresql95 = postgresql_9_5;
   postgresql96 = postgresql_9_6;
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 28a3698e59c..b3869203654 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -13891,7 +13891,6 @@ in
 
   pgbouncer = callPackage ../servers/sql/pgbouncer { };
 
-  pgpool93 = pgpool.override { postgresql = postgresql_9_3; };
   pgpool94 = pgpool.override { postgresql = postgresql_9_4; };
 
   pgpool = callPackage ../servers/sql/pgpool {
@@ -13904,7 +13903,6 @@ in
   postgresql = postgresql_9_6;
 
   inherit (callPackages ../servers/sql/postgresql { })
-    postgresql_9_3
     postgresql_9_4
     postgresql_9_5
     postgresql_9_6