diff --git a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
index 4824e01cd8ac..4acdcd7d60f9 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
@@ -444,6 +444,13 @@
           support due to python2 deprecation in nixpkgs
         </para>
       </listitem>
+      <listitem>
+        <para>
+          <literal>services.miniflux.adminCredentialFiles</literal> is
+          now required, instead of defaulting to
+          <literal>admin</literal> and <literal>password</literal>.
+        </para>
+      </listitem>
       <listitem>
         <para>
           The <literal>autorestic</literal> package has been upgraded
diff --git a/nixos/doc/manual/release-notes/rl-2205.section.md b/nixos/doc/manual/release-notes/rl-2205.section.md
index 78240a4f50e2..e81bdd884d06 100644
--- a/nixos/doc/manual/release-notes/rl-2205.section.md
+++ b/nixos/doc/manual/release-notes/rl-2205.section.md
@@ -147,6 +147,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - opensmtpd-extras is no longer build with python2 scripting support due to python2 deprecation in nixpkgs
 
+- `services.miniflux.adminCredentialFiles` is now required, instead of defaulting to `admin` and `password`.
+
 - The `autorestic` package has been upgraded from 1.3.0 to 1.5.0 which introduces breaking changes in config file, check [their migration guide](https://autorestic.vercel.app/migration/1.4_1.5) for more details.
 
 - For `pkgs.python3.pkgs.ipython`, its direct dependency `pkgs.python3.pkgs.matplotlib-inline`
diff --git a/nixos/modules/services/web-apps/miniflux.nix b/nixos/modules/services/web-apps/miniflux.nix
index 14cbfb395402..641c9be85d8c 100644
--- a/nixos/modules/services/web-apps/miniflux.nix
+++ b/nixos/modules/services/web-apps/miniflux.nix
@@ -7,26 +7,12 @@ let
   defaultAddress = "localhost:8080";
 
   dbUser = "miniflux";
-  dbPassword = "miniflux";
-  dbHost = "localhost";
   dbName = "miniflux";
 
-  defaultCredentials = pkgs.writeText "miniflux-admin-credentials" ''
-    ADMIN_USERNAME=admin
-    ADMIN_PASSWORD=password
-  '';
-
   pgbin = "${config.services.postgresql.package}/bin";
   preStart = pkgs.writeScript "miniflux-pre-start" ''
     #!${pkgs.runtimeShell}
-    db_exists() {
-      [ "$(${pgbin}/psql -Atc "select 1 from pg_database where datname='$1'")" == "1" ]
-    }
-    if ! db_exists "${dbName}"; then
-      ${pgbin}/psql postgres -c "CREATE ROLE ${dbUser} WITH LOGIN NOCREATEDB NOCREATEROLE ENCRYPTED PASSWORD '${dbPassword}'"
-      ${pgbin}/createdb --owner "${dbUser}" "${dbName}"
-      ${pgbin}/psql "${dbName}" -c "CREATE EXTENSION IF NOT EXISTS hstore"
-    fi
+    ${pgbin}/psql "${dbName}" -c "CREATE EXTENSION IF NOT EXISTS hstore"
   '';
 in
 
@@ -54,11 +40,10 @@ in
       };
 
       adminCredentialsFile = mkOption  {
-        type = types.nullOr types.path;
-        default = null;
+        type = types.path;
         description = ''
-          File containing the ADMIN_USERNAME, default is "admin", and
-          ADMIN_PASSWORD (length >= 6), default is "password"; in the format of
+          File containing the ADMIN_USERNAME and
+          ADMIN_PASSWORD (length >= 6) in the format of
           an EnvironmentFile=, as described by systemd.exec(5).
         '';
         example = "/etc/nixos/miniflux-admin-credentials";
@@ -70,16 +55,24 @@ in
 
     services.miniflux.config =  {
       LISTEN_ADDR = mkDefault defaultAddress;
-      DATABASE_URL = "postgresql://${dbUser}:${dbPassword}@${dbHost}/${dbName}?sslmode=disable";
+      DATABASE_URL = "user=${dbUser} host=/run/postgresql dbname=${dbName}";
       RUN_MIGRATIONS = "1";
       CREATE_ADMIN = "1";
     };
 
-    services.postgresql.enable = true;
+    services.postgresql = {
+      enable = true;
+      ensureUsers = [ {
+        name = dbUser;
+        ensurePermissions = {
+          "DATABASE ${dbName}" = "ALL PRIVILEGES";
+        };
+      } ];
+      ensureDatabases = [ dbName ];
+    };
 
     systemd.services.miniflux-dbsetup = {
       description = "Miniflux database setup";
-      wantedBy = [ "multi-user.target" ];
       requires = [ "postgresql.service" ];
       after = [ "network.target" "postgresql.service" ];
       serviceConfig = {
@@ -92,17 +85,16 @@ in
     systemd.services.miniflux = {
       description = "Miniflux service";
       wantedBy = [ "multi-user.target" ];
-      requires = [ "postgresql.service" ];
+      requires = [ "miniflux-dbsetup.service" ];
       after = [ "network.target" "postgresql.service" "miniflux-dbsetup.service" ];
 
       serviceConfig = {
         ExecStart = "${pkgs.miniflux}/bin/miniflux";
+        User = dbUser;
         DynamicUser = true;
         RuntimeDirectory = "miniflux";
         RuntimeDirectoryMode = "0700";
-        EnvironmentFile = if cfg.adminCredentialsFile == null
-        then defaultCredentials
-        else cfg.adminCredentialsFile;
+        EnvironmentFile = cfg.adminCredentialsFile;
         # Hardening
         CapabilityBoundingSet = [ "" ];
         DeviceAllow = [ "" ];
@@ -119,7 +111,7 @@ in
         ProtectKernelModules = true;
         ProtectKernelTunables = true;
         ProtectProc = "invisible";
-        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
+        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" "AF_UNIX" ];
         RestrictNamespaces = true;
         RestrictRealtime = true;
         RestrictSUIDSGID = true;
diff --git a/nixos/tests/miniflux.nix b/nixos/tests/miniflux.nix
index 1015550fa8c7..d905aea048a3 100644
--- a/nixos/tests/miniflux.nix
+++ b/nixos/tests/miniflux.nix
@@ -7,6 +7,15 @@ let
   defaultPort = 8080;
   defaultUsername = "admin";
   defaultPassword = "password";
+  adminCredentialsFile = pkgs.writeText "admin-credentials" ''
+            ADMIN_USERNAME=${defaultUsername}
+            ADMIN_PASSWORD=${defaultPassword}
+          '';
+  customAdminCredentialsFile = pkgs.writeText "admin-credentials" ''
+            ADMIN_USERNAME=${username}
+            ADMIN_PASSWORD=${password}
+          '';
+
 in
 with lib;
 {
@@ -17,13 +26,19 @@ with lib;
     default =
       { ... }:
       {
-        services.miniflux.enable = true;
+        services.miniflux = {
+          enable = true;
+          inherit adminCredentialsFile;
+        };
       };
 
     withoutSudo =
       { ... }:
       {
-        services.miniflux.enable = true;
+        services.miniflux = {
+          enable = true;
+          inherit adminCredentialsFile;
+        };
         security.sudo.enable = false;
       };
 
@@ -36,10 +51,7 @@ with lib;
             CLEANUP_FREQUENCY = "48";
             LISTEN_ADDR = "localhost:${toString port}";
           };
-          adminCredentialsFile = pkgs.writeText "admin-credentials" ''
-            ADMIN_USERNAME=${username}
-            ADMIN_PASSWORD=${password}
-          '';
+          adminCredentialsFile = customAdminCredentialsFile;
         };
       };
   };