diff --git a/devFlake/flake.lock b/devFlake/flake.lock
index 02ef74978..93c9e927b 100644
--- a/devFlake/flake.lock
+++ b/devFlake/flake.lock
@@ -3,16 +3,16 @@
     "clan-core-for-checks": {
       "flake": false,
       "locked": {
-        "lastModified": 1760213549,
-        "narHash": "sha256-XosVRUEcdsoEdRtXyz9HrRc4Dt9Ke+viM5OVF7tLK50=",
-        "ref": "main",
-        "rev": "9c8797e77031d8d472d057894f18a53bdc9bbe1e",
+        "lastModified": 1760368011,
+        "narHash": "sha256-mLK2nwbfklfOGIVAKVNDwGyYz8mPh4fzsAqSK3BlCiI=",
+        "ref": "clan-25.05",
+        "rev": "1b3c129aa9741d99b27810652ca888b3fbfc3a11",
         "shallow": true,
         "type": "git",
         "url": "https://git.clan.lol/clan/clan-core"
       },
       "original": {
-        "ref": "main",
+        "ref": "clan-25.05",
         "shallow": true,
         "type": "git",
         "url": "https://git.clan.lol/clan/clan-core"
@@ -105,16 +105,16 @@
     },
     "nixpkgs-dev": {
       "locked": {
-        "lastModified": 1760161054,
-        "narHash": "sha256-PO3cKHFIQEPI0dr/SzcZwG50cHXfjoIqP2uS5W78OXg=",
+        "lastModified": 1760309387,
+        "narHash": "sha256-e0lvQ7+B1Y8zjykYHAj9tBv10ggLqK0nmxwvMU3J0Eo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e18d8ec6fafaed55561b7a1b54eb1c1ce3ffa2c5",
+        "rev": "6cd95994a9c8f7c6f8c1f1161be94119afdcb305",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable-small",
+        "ref": "nixos-25.05-small",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/devFlake/flake.nix b/devFlake/flake.nix
index 7d3ad5907..2326ed4a3 100644
--- a/devFlake/flake.nix
+++ b/devFlake/flake.nix
@@ -2,7 +2,7 @@
   description = "private dev inputs";
 
   # Dev dependencies
-  inputs.nixpkgs-dev.url = "github:NixOS/nixpkgs/nixos-unstable-small";
+  inputs.nixpkgs-dev.url = "github:NixOS/nixpkgs/nixos-25.05-small";
 
   inputs.flake-utils.url = "github:numtide/flake-utils";
   inputs.flake-utils.inputs.systems.follows = "systems";
@@ -15,7 +15,7 @@
 
   inputs.systems.url = "github:nix-systems/default";
 
-  inputs.clan-core-for-checks.url = "git+https://git.clan.lol/clan/clan-core?ref=main&shallow=1";
+  inputs.clan-core-for-checks.url = "git+https://git.clan.lol/clan/clan-core?ref=clan-25.05&shallow=1";
   inputs.clan-core-for-checks.flake = false;
 
   inputs.test-fixtures.url = "git+https://git.clan.lol/clan/test-fixtures";
diff --git a/flake.lock b/flake.lock
index 3a0c3eccd..f42fc6066 100644
--- a/flake.lock
+++ b/flake.lock
@@ -71,15 +71,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1758805352,
-        "narHash": "sha256-BHdc43Lkayd+72W/NXRKHzX5AZ+28F3xaUs3a88/Uew=",
+        "lastModified": 1759509947,
+        "narHash": "sha256-4XifSIHfpJKcCf5bZZRhj8C4aCpjNBaE3kXr02s4rHU=",
         "owner": "nix-darwin",
         "repo": "nix-darwin",
-        "rev": "c48e963a5558eb1c3827d59d21c5193622a1477c",
+        "rev": "000eadb231812ad6ea6aebd7526974aaf4e79355",
         "type": "github"
       },
       "original": {
         "owner": "nix-darwin",
+        "ref": "nix-darwin-25.05",
         "repo": "nix-darwin",
         "type": "github"
       }
@@ -114,15 +115,15 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 315532800,
-        "narHash": "sha256-yDxtm0PESdgNetiJN5+MFxgubBcLDTiuSjjrJiyvsvM=",
-        "rev": "d7f52a7a640bc54c7bb414cca603835bf8dd4b10",
+        "lastModified": 1760324802,
+        "narHash": "sha256-VWlJtLQ5EQQj45Wj0yTExtSjwRyZ59/qMqEwus/Exlg=",
+        "rev": "7e297ddff44a3cc93673bb38d0374df8d0ad73e4",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.11pre871443.d7f52a7a640b/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixos/25.05/nixos-25.05.811135.7e297ddff44a/nixexprs.tar.xz"
       },
       "original": {
         "type": "tarball",
-        "url": "https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz"
+        "url": "https://nixos.org/channels/nixos-25.05/nixexprs.tar.xz"
       }
     },
     "root": {
diff --git a/flake.nix b/flake.nix
index ee4859ac1..23b83ebd7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,9 +2,9 @@
   description = "clan.lol base operating system";
 
   inputs = {
-    nixpkgs.url = "https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz";
+    nixpkgs.url = "https://nixos.org/channels/nixos-25.05/nixexprs.tar.xz";
 
-    nix-darwin.url = "github:nix-darwin/nix-darwin";
+    nix-darwin.url = "github:nix-darwin/nix-darwin/nix-darwin-25.05";
     nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
 
     flake-parts.url = "github:hercules-ci/flake-parts";