diff --git a/flake.lock b/flake.lock
index 58c5255..366a841 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770922915,
-        "narHash": "sha256-6J/JoK9iL7sHvKJcGW2KId2agaKv1OGypsa7kN+ZBD4=",
+        "lastModified": 1775037210,
+        "narHash": "sha256-KM2WYj6EA7M/FVZVCl3rqWY+TFV5QzSyyGE2gQxeODU=",
         "owner": "nix-darwin",
         "repo": "nix-darwin",
-        "rev": "6c5a56295d2a24e43bcd8af838def1b9a95746b2",
+        "rev": "06648f4902343228ce2de79f291dd5a58ee12146",
         "type": "github"
       },
       "original": {
@@ -81,11 +81,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770930784,
-        "narHash": "sha256-J5YzA89ctwpSpfk+SJWVRWLzhuziXRRcFmo+cs+1K5M=",
+        "lastModified": 1775047159,
+        "narHash": "sha256-UWM4VZvfKaPwA9FMu7iZha5YAE8vsEtUazk+rFxmbTY=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "2cc195b4783991b30fb8499c0dd2f9a7bf44d347",
+        "rev": "1ce9e62690dfdd7e76bd266ccb9a887778410eb2",
         "type": "github"
       },
       "original": {
@@ -166,11 +166,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1770843696,
-        "narHash": "sha256-LovWTGDwXhkfCOmbgLVA10bvsi/P8eDDpRudgk68HA8=",
+        "lastModified": 1775034801,
+        "narHash": "sha256-tsecHNsWwr4wSaM2oW9GwafMwE24J+xD8bKDoto3exY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2343bbb58f99267223bc2aac4fc9ea301a155a16",
+        "rev": "8d029aa64915e54b7846873d9583af4c9fd21ea4",
         "type": "github"
       },
       "original": {
@@ -205,11 +205,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770726378,
-        "narHash": "sha256-kck+vIbGOaM/dHea7aTBxdFYpeUl/jHOy5W3eyRvVx8=",
+        "lastModified": 1775036584,
+        "narHash": "sha256-zW0lyy7ZNNT/x8JhzFHBsP2IPx7ATZIPai4FJj12BgU=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "5eaaedde414f6eb1aea8b8525c466dc37bba95ae",
+        "rev": "4e0eb042b67d863b1b34b3f64d52ceb9cd926735",
         "type": "github"
       },
       "original": {
@@ -384,11 +384,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770683991,
-        "narHash": "sha256-xVfPvXDf9QN3Eh9dV+Lw6IkWG42KSuQ1u2260HKvpnc=",
+        "lastModified": 1774910634,
+        "narHash": "sha256-B+rZDPyktGEjOMt8PcHKYmgmKoF+GaNAFJhguktXAo0=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "8b89f44c2cc4581e402111d928869fe7ba9f7033",
+        "rev": "19bf3d8678fbbfbc173beaa0b5b37d37938db301",
         "type": "github"
       },
       "original": {
diff --git a/hosts/plato/configuration.nix b/hosts/plato/configuration.nix
index 7abd8f4..24fcc96 100644
--- a/hosts/plato/configuration.nix
+++ b/hosts/plato/configuration.nix
@@ -126,6 +126,7 @@ in
 
   sops.secrets = {
     filesystems-parthenon = { };
+    grafana-secret-key = { };
     upsmon = { };
   };
 
@@ -157,6 +158,9 @@ in
     grafana = {
       enable = true;
       settings = {
+        security = {
+          secret_key = "$__file{${secrets.grafana-secret-key.path}}";
+        };
         server = {
           domain = "plato.walkah.lab";
           http_port = 2342;
diff --git a/nix/secrets/secrets.yaml b/nix/secrets/secrets.yaml
index d468480..b177853 100644
--- a/nix/secrets/secrets.yaml
+++ b/nix/secrets/secrets.yaml
@@ -9,11 +9,8 @@ akkoma-joken-signer: ENC[AES256_GCM,data:6GbXC7teDXxr0z7eBLm9EvJv59Bvd1FqRuBGntA
 filesystems-parthenon: ENC[AES256_GCM,data:dYO+QjvWhR3oXrDfAEaUvTLx147NIDFcPUa7p3Jv558ynqmmEnVZ3+fVMUQVIw==,iv:ASmXqNA8/TZvSRo31CFAzt6StsZzZpVFvz15LN5+QmQ=,tag:Wx6kDCXqZ1iSmxpggBKVxA==,type:str]
 upsmon: ENC[AES256_GCM,data:Rlqkhh7w8S9jD3mwUdkt3g==,iv:hiMkbAhea1f6r5gGTRw49ebepMtTYBVyH+bHwp/T61Q=,tag:cbaxIDuD4JNeCC5MiMGl6w==,type:str]
 k3s-token: ENC[AES256_GCM,data:dyyFY/ruyCfAdQmmdD1eDPKhBWkbgElbFQgMjGALrM8OeTXRiiV18AwG1ZGtw+j3CBmladwBf0+gcfC0ojKHlA==,iv:j4IOIZegDMJik6shOhUZGyI0N8TD1yMDcOacArgM05Q=,tag:t91uRzF8RgxLF/f2M+9Wgg==,type:str]
+grafana-secret-key: ENC[AES256_GCM,data:rhKhCNsAC2W8+jAUtNncdaB0GMw=,iv:idADKz1QhjWobaYz+3azH+284HxYkSLsk49eDpTIREw=,tag:bECZcH2Tzj3SHaUzllFBJw==,type:str]
 sops:
-    kms: []
-    gcp_kms: []
-    azure_kv: []
-    hc_vault: []
     age:
         - recipient: age16yv7atd8n880ja98pksqqvunu2yw00660lkh4n0sg39j5vt3dujshyu95j
           enc: |
@@ -78,8 +75,7 @@ sops:
             WlZuY2ExWWJ1VzBpY2kzaUZCcVJMZHcKoqKBQEe+3UnAhqbc7Nq8zgEVoFFjryaY
             c8ALKqMIaMjAeA8ZU4ZTIu13pMYcJ+gAlPATt0vmsTn0Q0XIiudpJQ==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2025-03-10T18:41:36Z"
-    mac: ENC[AES256_GCM,data:nAUaEMxYGZc+hzeFo2sjQNBPuVw9GKjDAL9R9uJl9ySWNOLtSjl150qkAYjfqfIpsiyRtnSBfP1UxvKHjbAv5Fu9Bmkv+1rv6T8d9nK541DrT1IJ/F/sdw+Vqf/xJss1pvZLP/KhLT5wfvyPrk3VeKWx5f7BI/VzCsU1MNukZdY=,iv:ooxqCvIogeyXiHC10BJUYu9PCTZr/bnUJHiUzg2bjw4=,tag:Wt+vmIVPmlTOxAQ6rHnxdg==,type:str]
-    pgp: []
+    lastmodified: "2026-04-01T19:54:48Z"
+    mac: ENC[AES256_GCM,data:XElBU/9U79q9GakpD6/w/YvvOzW/vekIR2Anisf8XX7b2hTSjkSW9eJb4Lu56PbqvoXiTPrprbliJEmbf2vaNkVH2trWhjHN0kznR93ZWFFZkDFJlslNmEBDJiOs4Wy5w8Q9mDRxpTpo7J+MZ+dBPp1gKAPPFi8y3I1JNzyOjvU=,iv:LFQIndLG60TE7EaMaqKhJdWU81FsE4YynchmxUzN498=,tag:Elp+q/O/Jl7veAO2qpwBqA==,type:str]
     unencrypted_suffix: _unencrypted
-    version: 3.9.4
+    version: 3.12.2