diff --git a/flake.nix b/flake.nix
index 2a5bd7b..c19b978 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,7 +35,7 @@
         docker = pkgs.dockerTools.buildLayeredImage {
           name = self.packages.${system}.default.pname;
           tag = "latest";
-          contents = [ self.packages.${system}.default pkgs.busybox ];
+          contents = [ self.packages.${system}.default pkgs.busybox pkgs.cacert ];
           config = {
             Cmd = [ "/bin/app.py" ];
             WorkingDir = "/state";