diff --git a/flake.lock b/flake.lock
index 2c1b3b3..4c2d362 100644
--- a/flake.lock
+++ b/flake.lock
@@ -476,6 +476,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-0dc1c7": {
+      "locked": {
+        "lastModified": 1725718979,
+        "narHash": "sha256-TNj62uDY5ilnYu0Jne8/IIunfh1kf6kDPY9KdS+Eotw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "0dc1c7294c13f5d1dd6eccab4f75d268d7296efe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "0dc1c7294c13f5d1dd6eccab4f75d268d7296efe",
+        "type": "github"
+      }
+    },
     "nixpkgs-regression": {
       "locked": {
         "lastModified": 1643052045,
@@ -526,11 +542,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1735471104,
-        "narHash": "sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs=",
+        "lastModified": 1735834308,
+        "narHash": "sha256-dklw3AXr3OGO4/XT1Tu3Xz9n/we8GctZZ75ZWVqAVhk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "88195a94f390381c6afcdaa933c2f6ff93959cb4",
+        "rev": "6df24922a1400241dae323af55f30e4318a6ca65",
         "type": "github"
       },
       "original": {
@@ -589,6 +605,7 @@
         "nixos-exporter": "nixos-exporter",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_3",
+        "nixpkgs-0dc1c7": "nixpkgs-0dc1c7",
         "nurausstieg": "nurausstieg",
         "scan-to-gpg": "scan-to-gpg",
         "solid-xmpp-alarm": "solid-xmpp-alarm",
diff --git a/flake.nix b/flake.nix
index 1763ede..0000bef 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,8 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    # for etesync-dav
+    nixpkgs-0dc1c7.url = "github:NixOS/nixpkgs/0dc1c7294c13f5d1dd6eccab4f75d268d7296efe";
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
     berlinerbaeder-exporter = {
       url = "git+https://git.clerie.de/clerie/berlinerbaeder-exporter.git";
diff --git a/flake/overlay.nix b/flake/overlay.nix
index d50a81d..3a91216 100644
--- a/flake/overlay.nix
+++ b/flake/overlay.nix
@@ -1,4 +1,5 @@
 { self
+, nixpkgs-0dc1c7
 , berlinerbaeder-exporter
 , bij
 , chaosevents
@@ -10,6 +11,8 @@
 , ...
 }@inputs:
 final: prev: {
+  inherit (nixpkgs-0dc1c7.legacyPackages.${final.system})
+    etesync-dav;
   inherit (berlinerbaeder-exporter.packages.${final.system})
     berlinerbaeder-exporter;
   inherit (bij.packages.${final.system})
diff --git a/hosts/krypton/configuration.nix b/hosts/krypton/configuration.nix
index 2886bc8..64a0390 100644
--- a/hosts/krypton/configuration.nix
+++ b/hosts/krypton/configuration.nix
@@ -9,6 +9,7 @@
 
       ./android.nix
       ./backup.nix
+      ./etesync-dav.nix
       #./initrd.nix
       ./network.nix
       ./programs.nix
diff --git a/hosts/krypton/etesync-dav.nix b/hosts/krypton/etesync-dav.nix
new file mode 100644
index 0000000..43df56d
--- /dev/null
+++ b/hosts/krypton/etesync-dav.nix
@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+
+  services.etesync-dav = {
+    enable = true;
+    apiUrl = "https://etebase.clerie.de";
+  };
+
+}
diff --git a/hosts/web-2/configuration.nix b/hosts/web-2/configuration.nix
index dcc3aa7..68c4a78 100644
--- a/hosts/web-2/configuration.nix
+++ b/hosts/web-2/configuration.nix
@@ -9,6 +9,7 @@
       ./chaosevents.nix
       ./clerie.nix
       ./drop.nix
+      ./etebase.nix
       ./fieldpoc.nix
       ./gitea.nix
       ./ip.nix
diff --git a/hosts/web-2/etebase.nix b/hosts/web-2/etebase.nix
new file mode 100644
index 0000000..626779d
--- /dev/null
+++ b/hosts/web-2/etebase.nix
@@ -0,0 +1,21 @@
+{ ... }:
+
+{
+  services.etebase-server = {
+    enable = true;
+    port = 8001;
+    settings.allowed_hosts.allowed_host1 = "etebase.clerie.de";
+  };
+
+  services.nginx.virtualHosts = {
+    "etebase.clerie.de" = {
+      enableACME = true;
+      forceSSL = true;
+      locations = {
+        "/" = {
+          proxyPass = "http://127.0.0.1:8001";
+        };
+      };
+    };
+  };
+}
diff --git a/pkgs/clerie-update-nixfiles/clerie-update-nixfiles.sh b/pkgs/clerie-update-nixfiles/clerie-update-nixfiles.sh
index ea11c3d..20a6dbd 100755
--- a/pkgs/clerie-update-nixfiles/clerie-update-nixfiles.sh
+++ b/pkgs/clerie-update-nixfiles/clerie-update-nixfiles.sh
@@ -56,7 +56,7 @@ echo "[!] Create branch ${UPDATE_BRANCH}"
 xgit checkout -b "${UPDATE_BRANCH}"
 
 echo "[!] Update nixpkgs"
-nix flake lock --update-input nixpkgs
+nix flake update nixpkgs
 
 echo "[!] Commit changes"
 xgit add flake.lock