diff --git a/flake.lock b/flake.lock
index ce2e37c..7a5770d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -38,27 +38,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1683478192,
-        "narHash": "sha256-7f7RR71w0jRABDgBwjq3vE1yY3nrVJyXk8hDzu5kl1E=",
+        "lastModified": 1684922889,
+        "narHash": "sha256-l0WZAmln8959O7RdYUJ3gnAIM9OPKFLKHKGX4q+Blrk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "c568239bcc990050b7aedadb7387832440ad8fb1",
+        "rev": "04aaf8511678a0d0f347fdf1e8072fe01e4a509e",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-22.11",
+        "ref": "nixos-23.05",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1683408522,
-        "narHash": "sha256-9kcPh6Uxo17a3kK3XCHhcWiV1Yu1kYj22RHiymUhMkU=",
+        "lastModified": 1684844536,
+        "narHash": "sha256-M7HhXYVqAuNb25r/d3FOO0z4GxPqDIZp5UjHFbBgw0Q=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "897876e4c484f1e8f92009fd11b7d988a121a4e7",
+        "rev": "d30264c2691128adc261d7c9388033645f0e742b",
         "type": "github"
       },
       "original": {
@@ -98,11 +98,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1683512408,
-        "narHash": "sha256-QMJGp/37En+d5YocJuSU89GL14bBYkIJQ6mqhRfqkkc=",
+        "lastModified": 1684894917,
+        "narHash": "sha256-kwKCfmliHIxKuIjnM95TRcQxM/4AAEIZ+4A9nDJ6cJs=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "75b07756c3feb22cf230e75fb064c1b4c725b9bc",
+        "rev": "9ea38d547100edcf0da19aaebbdffa2810585495",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 37e97ab..4c4a18a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "libFenrir";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
     rust-overlay.url = "github:oxalica/rust-overlay";
     flake-utils.url  = "github:numtide/flake-utils";
@@ -46,7 +46,7 @@
         shellHook = ''
           # use zsh or other custom shell
           USER_SHELL="$(grep $USER /etc/passwd | cut -d ':' -f 7)"
-          if [ -n "$USER_SHELL" ] && [ "$USER_SHELL" != "$SHELL" ]; then
+          if [ -n "$USER_SHELL" ]; then
             exec $USER_SHELL
           fi
         '';