diff --git a/flake.lock b/flake.lock
index 0e7a6645aa..4d943e6cc9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -36,16 +36,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1702312524,
-        "narHash": "sha256-gkZJRDBUCpTPBvQk25G0B7vfbpEYM5s5OZqghkjZsnE=",
+        "lastModified": 1703200384,
+        "narHash": "sha256-q5j06XOsy0qHOarsYPfZYJPWbTbc8sryRxianlEPJN0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a9bf124c46ef298113270b1f84a164865987a91c",
+        "rev": "0b3d618173114c64ab666f557504d6982665d328",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-23.11",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index ac22add28b..46480d0354 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "Description for the project";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
     multiversal.url = "github:autc04/multiversal";
     multiversal.flake = false;
     flake-parts.url = "github:hercules-ci/flake-parts";
diff --git a/nix/sources.json b/nix/sources.json
index 15b7018841..13b4dfc2d2 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": null,
         "owner": "autc04",
         "repo": "multiversal",
-        "rev": "1170bce4c98f1956ad73ca335479d510cd6e8620",
-        "sha256": "040vi7c2wggaazm2nrjvzrkn10sgmsbrcpmj2gi1ynjf4awxiqkw",
+        "rev": "27c08c654bbd48d23f025741e3a584b59374904a",
+        "sha256": "1b022pvpjw3n6713zq09abgbm0iba6lr16czhjxi1yk23xchny0s",
         "type": "tarball",
-        "url": "https://github.com/autc04/multiversal/archive/1170bce4c98f1956ad73ca335479d510cd6e8620.tar.gz",
+        "url": "https://github.com/autc04/multiversal/archive/27c08c654bbd48d23f025741e3a584b59374904a.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {
@@ -24,15 +24,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
-        "branch": "release-21.11",
+        "branch": "nixos-23.11",
         "description": "Nix Packages collection",
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2766f77c32e171a04d59b636a91083bae862274e",
-        "sha256": "1xk1f62n00z7q5i3pf4c8c4rlv5k4jwpgh0pqgzw1l40vhdkixk9",
+        "rev": "0b3d618173114c64ab666f557504d6982665d328",
+        "sha256": "1p941x8rx6hq8zrcmwnw6rnxd4v0v7vn1v5a763lmjxcfglz965b",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/2766f77c32e171a04d59b636a91083bae862274e.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/0b3d618173114c64ab666f557504d6982665d328.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }