diff --git a/hosts/cube/postgresql.nix b/hosts/cube/postgresql.nix
index 529628f..7832909 100644
--- a/hosts/cube/postgresql.nix
+++ b/hosts/cube/postgresql.nix
@@ -27,15 +27,18 @@ in {
   ];
 
   config.services.postgresql = enabled {
-    package = pkgs.postgresql_14;
+    package = pkgs.postgresql_17;
 
     enableJIT = true;
 
     initdbArgs = [ "--locale=C" "--encoding=UTF8" ];
 
     authentication = mkOverride 10 /* ini */ ''
-      # Type Database DBUser Authentication
-      local  all      all    peer
+      #     DATABASE USER        AUTHENTICATION
+      local all      all         peer
+
+      #     DATABASE USER ADDRESS AUTHENTICATION
+      host  all      all  ::/0    md5
     '';
 
     ensure = [ "postgres" "root" ];
@@ -54,10 +57,12 @@ in {
     });
 
     settings = {
-      listen_addresses = mkForce "";
+      listen_addresses = mkForce "::";
 
       # Generated by <https://pgconfigurator.cybertec.at/>
-      max_connections                = 100;
+
+      # Connectivity
+      max_connections                = 20;
       superuser_reserved_connections = 3;
 
       # Memory Settings
@@ -66,20 +71,20 @@ in {
       maintenance_work_mem     = "320 MB";
       huge_pages               = "off";
       effective_cache_size     = "3 GB";
-      effective_io_concurrency = 1; # Concurrent IO only really activated if OS supports posix_fadvise function.
-      random_page_cost         = 4; # Speed of random disk access relative to sequential access (1.0).
+      effective_io_concurrency = 1;
+      random_page_cost         = 4;
 
       # Monitoring
-      shared_preload_libraries = "pg_stat_statements"; # Per statement resource usage stats.
-      track_io_timing          = "on";                 # Measure exact block IO times.
-      track_functions          = "pl";                 # Track execution times of pl-language procedures if any.
+      shared_preload_libraries = "pg_stat_statements";
+      track_io_timing          = "on";
+      track_functions          = "pl";
 
       # Replication
       wal_level          = "replica";
       max_wal_senders    = 0;
       synchronous_commit = "on";
 
-      # Checkpointing
+      # Checkpointing: 
       checkpoint_timeout           = "15 min";
       checkpoint_completion_target = 0.9;
       max_wal_size                 = "1024 MB";
@@ -87,7 +92,7 @@ in {
 
       # WAL writing
       wal_compression        = "on";
-      wal_buffers            = -1; # auto-tuned by Postgres till maximum of segment size (16MB by default).
+      wal_buffers            = -1;
       wal_writer_delay       = "200ms";
       wal_writer_flush_after = "1MB";
 
@@ -97,19 +102,21 @@ in {
       bgwriter_lru_multiplier = 2.0;
       bgwriter_flush_after    = 0;
 
-      # Parallel queries
+      # Parallel queries: 
       max_worker_processes             = 2;
       max_parallel_workers_per_gather  = 1;
       max_parallel_maintenance_workers = 1;
       max_parallel_workers             = 2;
       parallel_leader_participation    = "on";
 
-      # Advanced features
-      enable_partitionwise_join      = "on";
+      # Advanced features 
+      enable_partitionwise_join      = "on" ;
       enable_partitionwise_aggregate = "on";
       jit                            = "on";
       max_slot_wal_keep_size         = "1000 MB";
       track_wal_io_timing            = "on";
+      maintenance_io_concurrency     = 1;
+      wal_recycle                    = "on";
     };
   };
 }