diff --git a/flake.lock b/flake.lock
index 897ee17..bb3cc52 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,12 +1,30 @@
 {
   "nodes": {
     "crane": {
+      "inputs": {
+        "flake-compat": [
+          "lanzaboote",
+          "flake-compat"
+        ],
+        "flake-utils": [
+          "lanzaboote",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ],
+        "rust-overlay": [
+          "lanzaboote",
+          "rust-overlay"
+        ]
+      },
       "locked": {
-        "lastModified": 1731098351,
-        "narHash": "sha256-HQkYvKvaLQqNa10KEFGgWHfMAbWBfFp+4cAgkut+NNE=",
+        "lastModified": 1681177078,
+        "narHash": "sha256-ZNIjBDou2GOabcpctiQykEQVkI8BDwk7TyvlWlI4myE=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "ef80ead953c1b28316cc3f8613904edc2eb90c28",
+        "rev": "0c9f468ff00576577d83f5019a66c557ede5acf6",
         "type": "github"
       },
       "original": {
@@ -18,11 +36,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1696426674,
-        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
         "type": "github"
       },
       "original": {
@@ -39,11 +57,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1730504689,
-        "narHash": "sha256-hgmguH29K2fvs9szpq2r3pz2/8cJd2LPS+b4tfNFCwE=",
+        "lastModified": 1680392223,
+        "narHash": "sha256-n3g7QFr85lDODKt250rkZj2IFS3i4/8HBU2yKHO3tqw=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "506278e768c2a08bec68eb62932193e341f55c90",
+        "rev": "dcc36e45d054d7bb554c9cdab69093debd91a0b5",
         "type": "github"
       },
       "original": {
@@ -73,6 +91,24 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -82,11 +118,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1709087332,
-        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "lastModified": 1660459072,
+        "narHash": "sha256-8DFJjXG8zqoONA1vXtgeKXy68KdJL5UaXR8NtVMUbx8=",
         "owner": "hercules-ci",
         "repo": "gitignore.nix",
-        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
         "type": "github"
       },
       "original": {
@@ -102,11 +138,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746171682,
-        "narHash": "sha256-EyXUNSa+H+YvGVuQJP1nZskXAowxKYp79RNUsNdQTj4=",
+        "lastModified": 1745557122,
+        "narHash": "sha256-eqSo9ugzsqhFgaDFYUZj943nurlX4L6f+AW0skJ4W+M=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "50eee705bbdbac942074a8c120e8194185633675",
+        "rev": "dd26f75fb4ec1c731d4b1396eaf4439ce40a91c1",
         "type": "github"
       },
       "original": {
@@ -121,21 +157,22 @@
         "crane": "crane",
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs",
         "pre-commit-hooks-nix": "pre-commit-hooks-nix",
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1737639419,
-        "narHash": "sha256-AEEDktApTEZ5PZXNDkry2YV2k6t0dTgLPEmAZbnigXU=",
+        "lastModified": 1682802423,
+        "narHash": "sha256-Fb5TeRTdvUlo/5Yi2d+FC8a6KoRLk2h1VE0/peMhWPs=",
         "owner": "nix-community",
         "repo": "lanzaboote",
-        "rev": "a65905a09e2c43ff63be8c0e86a93712361f871e",
+        "rev": "64b903ca87d18cef2752c19c098af275c6e51d63",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "ref": "v0.4.2",
+        "ref": "v0.3.0",
         "repo": "lanzaboote",
         "type": "github"
       }
@@ -179,11 +216,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1746621361,
-        "narHash": "sha256-T9vOxEqI1j1RYugV0b9dgy0AreiZ9yBDKZJYyclF0og=",
+        "lastModified": 1745503349,
+        "narHash": "sha256-bUGjvaPVsOfQeTz9/rLTNLDyqbzhl0CQtJJlhFPhIYw=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "2ea3ad8a1f26a76f8a8e23fc4f7757c46ef30ee5",
+        "rev": "f7bee55a5e551bd8e7b5b82c9bc559bc50d868d1",
         "type": "github"
       },
       "original": {
@@ -195,11 +232,11 @@
     },
     "nixos-unstable": {
       "locked": {
-        "lastModified": 1746461020,
-        "narHash": "sha256-7+pG1I9jvxNlmln4YgnlW4o+w0TZX24k688mibiFDUE=",
+        "lastModified": 1745526057,
+        "narHash": "sha256-ITSpPDwvLBZBnPRS2bUcHY3gZSwis/uTe255QgMtTLA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3730d8a308f94996a9ba7c7138ede69c1b9ac4ae",
+        "rev": "f771eb401a46846c1aebd20552521b233dd7e18b",
         "type": "github"
       },
       "original": {
@@ -211,11 +248,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1731919951,
-        "narHash": "sha256-vOM6ETpl1yu9KLi/icTmLJIPbbdJCdAVYUXZceO/Ce4=",
+        "lastModified": 1682741954,
+        "narHash": "sha256-RPZxzRu8XU0YD2WeYUFYzJy5yAvWUsxkuK+zWw+6WVk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "04386ac325a813047fc314d4b4d838a5b1e3c7fe",
+        "rev": "373e9eb4c42b2fc0611d794de5ea715a35d72393",
         "type": "github"
       },
       "original": {
@@ -227,27 +264,27 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1730741070,
-        "narHash": "sha256-edm8WG19kWozJ/GqyYx2VjW99EdhjKwbY3ZwdlPAAlo=",
+        "lastModified": 1678872516,
+        "narHash": "sha256-/E1YwtMtFAu2KUQKV/1+KFuReYPANM2Rzehk84VxVoc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d063c1dd113c91ab27959ba540c0d9753409edf3",
+        "rev": "9b8e5abb18324c7fe9f07cb100c3cd4a29cda8b8",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.05",
+        "ref": "nixos-22.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1746557022,
-        "narHash": "sha256-QkNoyEf6TbaTW5UZYX0OkwIJ/ZMeKSSoOMnSDPQuol0=",
+        "lastModified": 1745733216,
+        "narHash": "sha256-UTgWyFHohRQ8rOcsb6yMClNLwrQtBeyx5uHWGd7qdM8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1d3aeb5a193b9ff13f63f4d9cc169fb88129f860",
+        "rev": "8ad8b9d65444c358b86bf75f73a036b3fd35bce4",
         "type": "github"
       },
       "original": {
@@ -259,11 +296,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1746461020,
-        "narHash": "sha256-7+pG1I9jvxNlmln4YgnlW4o+w0TZX24k688mibiFDUE=",
+        "lastModified": 1745526057,
+        "narHash": "sha256-ITSpPDwvLBZBnPRS2bUcHY3gZSwis/uTe255QgMtTLA=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "3730d8a308f94996a9ba7c7138ede69c1b9ac4ae",
+        "rev": "f771eb401a46846c1aebd20552521b233dd7e18b",
         "type": "github"
       },
       "original": {
@@ -280,11 +317,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1746740791,
-        "narHash": "sha256-4o0Aj9BXpybfAkcxY3h9+y0AuC5TtIVztuTdVXYubrI=",
+        "lastModified": 1745672678,
+        "narHash": "sha256-+3HDClco9BTgWovVMODc0e8Gh3+LNTt1EXZW2tJaXjA=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "228d29ab7ffa3f89d0088917883b179c7bce05f2",
+        "rev": "34c80a75bf09085cfd04a476389a4162c6154d42",
         "type": "github"
       },
       "original": {
@@ -299,6 +336,10 @@
           "lanzaboote",
           "flake-compat"
         ],
+        "flake-utils": [
+          "lanzaboote",
+          "flake-utils"
+        ],
         "gitignore": "gitignore",
         "nixpkgs": [
           "lanzaboote",
@@ -307,11 +348,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1731363552,
-        "narHash": "sha256-vFta1uHnD29VUY4HJOO/D6p6rxyObnf+InnSMT4jlMU=",
+        "lastModified": 1681413034,
+        "narHash": "sha256-/t7OjNQcNkeWeSq/CFLYVBfm+IEnkjoSm9iKvArnUUI=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "cd1af27aa85026ac759d5d3fccf650abe7e1bbf0",
+        "rev": "d3de8f69ca88fb6f8b09e5b598be5ac98d28ede5",
         "type": "github"
       },
       "original": {
@@ -336,17 +377,21 @@
     },
     "rust-overlay": {
       "inputs": {
+        "flake-utils": [
+          "lanzaboote",
+          "flake-utils"
+        ],
         "nixpkgs": [
           "lanzaboote",
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1731897198,
-        "narHash": "sha256-Ou7vLETSKwmE/HRQz4cImXXJBr/k9gp4J4z/PF8LzTE=",
+        "lastModified": 1682129965,
+        "narHash": "sha256-1KRPIorEL6pLpJR04FwAqqnt4Tzcm4MqD84yhlD+XSk=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "0be641045af6d8666c11c2c40e45ffc9667839b5",
+        "rev": "2c417c0460b788328220120c698630947547ee83",
         "type": "github"
       },
       "original": {
@@ -370,6 +415,21 @@
         "type": "github"
       }
     },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "treefmt-nix": {
       "inputs": {
         "nixpkgs": [
@@ -398,11 +458,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746216483,
-        "narHash": "sha256-4h3s1L/kKqt3gMDcVfN8/4v2jqHrgLIe4qok4ApH5x4=",
+        "lastModified": 1730321837,
+        "narHash": "sha256-vK+a09qq19QNu2MlLcvN4qcRctJbqWkX7ahgPZ/+maI=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "29ec5026372e0dec56f890e50dbe4f45930320fd",
+        "rev": "746901bb8dba96d154b66492a29f5db0693dbfcc",
         "type": "github"
       },
       "original": {
@@ -413,7 +473,7 @@
     },
     "utils": {
       "inputs": {
-        "systems": "systems"
+        "systems": "systems_2"
       },
       "locked": {
         "lastModified": 1731533236,
diff --git a/flake.nix b/flake.nix
index 470ae9b..2abd118 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,7 +10,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     lanzaboote = {
-      url = "github:nix-community/lanzaboote/v0.4.2";
+      url = "github:nix-community/lanzaboote/v0.3.0";
       # deliberately do _not_ follow the nixpkgs input here, because paranoia and test coverage
     };
     utils.url = "github:numtide/flake-utils";
diff --git a/hosts/thinknix/default.nix b/hosts/thinknix/default.nix
index 431f3ba..75bd887 100644
--- a/hosts/thinknix/default.nix
+++ b/hosts/thinknix/default.nix
@@ -22,8 +22,6 @@
     speed = 180;
   };
 
-  boot.extraModprobeConfig = "options thinkpad_acpi fan_control=1"; # enable fan control via echo to /proc/acpi/ibm/fan
-
   schmittlauch.guestUser.enable = true;
 
   networking.hostName = "thinknix";