diff --git a/modules/backups/bigding/default.nix b/modules/backups/bigding/default.nix
index 5da9974..4b656b2 100644
--- a/modules/backups/bigding/default.nix
+++ b/modules/backups/bigding/default.nix
@@ -37,7 +37,7 @@
       ];
 
       backupPrepareCommand = ''
-        ${pkgs.postgresql_13}/bin/pg_dumpall --clean -U postgres | ${pkgs.zstd}/bin/zstd --rsyncable > /var/backup/pgdump.sql.zst
+        ${pkgs.postgresql_16}/bin/pg_dumpall --clean -U postgres | ${pkgs.zstd}/bin/zstd --rsyncable > /var/backup/pgdump.sql.zst
       '';
     };
   };
diff --git a/modules/dungflix/default.nix b/modules/dungflix/default.nix
index a143dfb..9bf2f28 100644
--- a/modules/dungflix/default.nix
+++ b/modules/dungflix/default.nix
@@ -27,7 +27,8 @@ in {
 
     transmission = {
       enable = true;
-      webHome = pkgs.transmission + /share/transmission/web;
+      package = pkgs.transmission_3;
+      webHome = pkgs.transmission_3 + /share/transmission/web;
       settings = {
         rpc-host-whitelist-enable = true;
         rpc-host-whitelist = "bigding.squirrel-clownfish.ts.net,bigding";
diff --git a/modules/synapse/default.nix b/modules/synapse/default.nix
index ea365e3..d87f782 100644
--- a/modules/synapse/default.nix
+++ b/modules/synapse/default.nix
@@ -8,6 +8,7 @@
 in {
   services.postgresql = {
     enable = true;
+    package = pkgs.postgresql_16;
     ensureUsers = [
     ];
     authentication = ''