diff --git a/flake.lock b/flake.lock
index 2b3e1a9..d72a575 100644
--- a/flake.lock
+++ b/flake.lock
@@ -135,7 +135,44 @@
         "type": "github"
       }
     },
+    "erosanix": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1755873371,
+        "narHash": "sha256-XuIcd9zzF956yf6TCEK633hsbfdA7HWzyEyykwIoARU=",
+        "owner": "emmanuelrosa",
+        "repo": "erosanix",
+        "rev": "daaaa165f3746dbf5fb133f5c50b99a207376bee",
+        "type": "github"
+      },
+      "original": {
+        "owner": "emmanuelrosa",
+        "repo": "erosanix",
+        "type": "github"
+      }
+    },
     "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_2": {
       "flake": false,
       "locked": {
         "lastModified": 1747046372,
@@ -151,7 +188,7 @@
         "type": "github"
       }
     },
-    "flake-compat_2": {
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1696426674,
@@ -167,7 +204,7 @@
         "type": "github"
       }
     },
-    "flake-compat_3": {
+    "flake-compat_4": {
       "locked": {
         "lastModified": 1733328505,
         "narHash": "sha256-NeCCThCEP3eCl2l/+27kNNK7QrwZB1IJCrXfrbv5oqU=",
@@ -1330,7 +1367,7 @@
     "nixvim": {
       "inputs": {
         "devshell": "devshell",
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat_4",
         "flake-parts": "flake-parts_2",
         "git-hooks": "git-hooks",
         "home-manager": "home-manager_4",
@@ -1395,7 +1432,7 @@
     },
     "pre-commit-hooks": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "gitignore": "gitignore",
         "nixpkgs": [
           "hyprland",
@@ -1418,7 +1455,7 @@
     },
     "pre-commit-hooks_2": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "gitignore": "gitignore_2",
         "nixpkgs": [
           "illogical-impulse",
@@ -1465,6 +1502,7 @@
       "inputs": {
         "chaotic": "chaotic",
         "darwin": "darwin",
+        "erosanix": "erosanix",
         "flake-utils": "flake-utils",
         "home-manager": "home-manager_2",
         "hyprland": "hyprland",
diff --git a/flake.nix b/flake.nix
index 9df5616..8e916b9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -17,6 +17,11 @@
       # ref = "refs/tags/matugen-v0.10.0";
     };
 
+    erosanix = {
+      url = "github:emmanuelrosa/erosanix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     hyprland = {
       url = "git+https://github.com/hyprwm/Hyprland?submodules=1";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -52,6 +57,7 @@
     jovian,
     nixovim,
     illogical-impulse,
+    erosanix,
     ...
   } @ inputs: let
     config = import ./config.nix;
@@ -69,6 +75,7 @@
           chaotic.nixosModules.default
           home-manager.nixosModules.home-manager
           jovian.nixosModules.default
+          erosanix.nixosModules.protonvpn
           ./hosts/hakase/configuration.nix
         ];
       };
diff --git a/modules/default/apps.nix b/modules/default/apps.nix
index 4c30353..2a48a1d 100644
--- a/modules/default/apps.nix
+++ b/modules/default/apps.nix
@@ -9,6 +9,7 @@
     wl-clipboard
     tldr
     lact
+    anki
   ];
   imports = [
     ../../packages/virtualbox/default.nix
@@ -23,4 +24,10 @@
     };
     enable = true;
   };
+  # services = {
+  #   protonvpn = {
+  #     enable = true;
+  #     autostart = true;
+  #   };
+  # };
 }