diff --git a/flake.lock b/flake.lock
index f74a5d03..08e84cc5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -230,6 +230,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-25_05": {
+      "locked": {
+        "lastModified": 1763334038,
+        "narHash": "sha256-LBVOyaH6NFzQ3X/c6vfMZ9k4SV2ofhpxeL9YnhHNJQQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4c8cdd5b1a630e8f72c9dd9bf582b1afb3127d2c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "prybar": {
       "inputs": {
         "flake-utils": "flake-utils_2",
@@ -279,6 +295,7 @@
         "nixpkgs": "nixpkgs",
         "nixpkgs-23_05": "nixpkgs-23_05",
         "nixpkgs-24_11": "nixpkgs-24_11",
+        "nixpkgs-25_05": "nixpkgs-25_05",
         "prybar": "prybar",
         "replit-rtld-loader": "replit-rtld-loader",
         "ztoc-rs": "ztoc-rs"
diff --git a/flake.nix b/flake.nix
index e0ee6301..0087c62d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,6 +2,7 @@
   description = "Nix expressions for defining Replit development environments";
   inputs.nixpkgs-23_05.url = "github:nixos/nixpkgs/nixos-23.05";
   inputs.nixpkgs-24_11.url = "github:nixos/nixpkgs/nixos-24.11";
+  inputs.nixpkgs-25_05.url = "github:nixos/nixpkgs/nixos-25.05";
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
   inputs.fenix.url = "github:nix-community/fenix";
   inputs.fenix.inputs.nixpkgs.follows = "nixpkgs";
@@ -16,7 +17,7 @@
   inputs.replit-rtld-loader.url = "github:replit/replit_rtld_loader";
   inputs.replit-rtld-loader.inputs.nixpkgs.follows = "nixpkgs";
 
-  outputs = { self, nixpkgs, nixpkgs-23_05, nixpkgs-24_11, prybar, java-language-server, nil, fenix, replit-rtld-loader, ... }:
+  outputs = { self, nixpkgs, nixpkgs-23_05, nixpkgs-24_11, nixpkgs-25_05, prybar, java-language-server, nil, fenix, replit-rtld-loader, ... }:
     let
       mkPkgs = nixpkgs-spec: system: import nixpkgs-spec {
         inherit system;
@@ -36,6 +37,7 @@
 
       pkgs-23_05 = mkPkgs nixpkgs-23_05 "x86_64-linux";
       pkgs-24_11 = mkPkgs nixpkgs-24_11 "x86_64-linux";
+      pkgs-25_05 = mkPkgs nixpkgs-25_05 "x86_64-linux";
 
       patched-unstable = nixpkgs.legacyPackages.x86_64-linux.applyPatches {
         name = "nixpkgs-unstable-patched";
@@ -117,6 +119,7 @@
         inherit pkgs;
         inherit pkgs-23_05;
         inherit pkgs-24_11;
+        inherit pkgs-25_05;
       }
     );
 }
diff --git a/pkgs/modules/default.nix b/pkgs/modules/default.nix
index 63069beb..2d84ebd5 100644
--- a/pkgs/modules/default.nix
+++ b/pkgs/modules/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, pkgs-23_05, pkgs-24_11 }:
+{ pkgs, pkgs-23_05, pkgs-24_11, pkgs-25_05 }:
 with builtins;
 let
   mkModule = path: pkgs.callPackage ../moduleit/entrypoint.nix {
@@ -110,10 +110,10 @@ let
     (import ./nix)
     (import ./php)
     (import ./postgresql {
-      postgresql = pkgs.postgresql_16;
+      postgresql = pkgs-25_05.postgresql_16;
     })
     (import ./postgresql {
-      postgresql = pkgs.postgresql_17;
+      postgresql = pkgs-25_05.postgresql_17;
     })
     (import ./qbasic)
     (import ./R)