diff --git a/pkgs/by-name/st/stellar-core/package.nix b/pkgs/by-name/st/stellar-core/package.nix
index 95c12b74233c..72d45fb2346d 100644
--- a/pkgs/by-name/st/stellar-core/package.nix
+++ b/pkgs/by-name/st/stellar-core/package.nix
@@ -129,10 +129,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   doCheck = true;
 
-  postgresqlTestUserOptions = "LOGIN CREATEDB";
+  postgresqlTestUserOptions = "LOGIN SUPERUSER";
 
   postgresqlTestSetupPost = ''
-    for database in $(seq 0 15); do
+    for database in $(seq 0 3); do
       createdb "test$database"
     done
   '';