diff --git a/flake.nix b/flake.nix
index 3227cd8..10688ac 100644
--- a/flake.nix
+++ b/flake.nix
@@ -105,6 +105,7 @@
           nicer = super.callPackage ./pkgs/nicer.nix { };
           tmuxbash = super.callPackage ./pkgs/tmuxbash.nix { };
           vanta-agent = super.callPackage ./pkgs/vanta-agent.nix { };
+          chronoctl = super.callPackage ./pkgs/chronoctl.nix { };
 
           pkgs-unstable = import nixpkgs-unstable {
             inherit (super) system;
@@ -323,7 +324,7 @@
       in
       {
         packages.x86_64-linux = {
-          inherit (pkgs) weather gamja;
+          inherit (pkgs) weather gamja chronoctl;
         };
       }
     );
diff --git a/pkgs/chronoctl.nix b/pkgs/chronoctl.nix
new file mode 100644
index 0000000..9a85d78
--- /dev/null
+++ b/pkgs/chronoctl.nix
@@ -0,0 +1,43 @@
+{
+  stdenv,
+  fetchurl,
+}:
+
+let
+  version = "0.71.0";
+  sources = {
+    x86_64-linux = {
+      url = "https://storage.googleapis.com/chronosphere-release/${version}/chronoctl-linux-amd64";
+      # nix store prefetch-file --hash-type sha256 https://storage.googleapis.com/chronosphere-release/0.71.0/chronoctl-linux-amd64
+      hash = "sha256-SE7wuSRh3lwx7IBzqMsV3hy4DeHLfbs60uHhhIsLZMs=";
+    };
+
+    aarch64-linux = {
+      url = "https://storage.googleapis.com/chronosphere-release/${version}/chronoctl-linux-arm64";
+      # Replace with the real hash (SRI). For a quick prefetch:
+      # nix store prefetch-file --hash-type sha256 https://storage.googleapis.com/chronosphere-release/0.71.0/chronoctl-linux-arm64
+      hash = "sha256-iM9fLvpRdpvnxN+Rto1zh5BhwwEkLSuhPzODYd2TtJo=";
+    };
+  };
+
+  srcInfo =
+    sources.${stdenv.hostPlatform.system}
+      or (throw "chronoctl: unsupported system ${stdenv.hostPlatform.system}");
+in
+
+stdenv.mkDerivation {
+  pname = "chronoctl";
+  inherit version;
+
+  src = fetchurl {
+    inherit (srcInfo) url hash;
+  };
+
+  dontUnpack = true;
+
+  installPhase = ''
+    runHook preInstall
+    install -Dm755 "$src" "$out/bin/chronoctl"
+    runHook postInstall
+  '';
+}
diff --git a/shared/work/default.nix b/shared/work/default.nix
index 8bcdae5..f16a157 100644
--- a/shared/work/default.nix
+++ b/shared/work/default.nix
@@ -13,6 +13,7 @@
     mysql80
     kubectl
     kubectx
+    chronoctl
     terraform
     github-cli
     claude-code