diff --git a/pkgs/servers/caddy/v1.nix b/pkgs/servers/caddy/v1.nix
deleted file mode 100644
index dce4eea84b8a..000000000000
--- a/pkgs/servers/caddy/v1.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{ stdenv, buildGoModule, fetchFromGitHub }:
-
-buildGoModule rec {
-  pname = "caddy";
-  version = "1.0.5";
-
-  goPackagePath = "github.com/caddyserver/caddy";
-
-  subPackages = [ "caddy" ];
-
-  src = fetchFromGitHub {
-    owner = "caddyserver";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "0jrhwmr6gggppskg5h450wybzkv17iq69dgw36hd1dp56q002i7g";
-  };
-
-  vendorSha256 = "09vnci9pp8zp7bvn8zj68wslz2nc54nhcd0ll31sqfjbp00215mj";
-
-  preBuild = ''
-    cat << EOF > caddy/main.go
-    package main
-    import "github.com/caddyserver/caddy/caddy/caddymain"
-    var run = caddymain.Run // replaced for tests
-    func main() {
-      caddymain.EnableTelemetry = false
-      run()
-    }
-    EOF
-  '';
-
-  meta = with stdenv.lib; {
-    homepage = "https://caddyserver.com";
-    description = "Fast, cross-platform HTTP/2 web server with automatic HTTPS";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ rushmorem fpletz zimbatm filalex77 ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index b4029f870794..645d70bc3161 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -67,6 +67,7 @@ mapAliases ({
   buildGo112Package = throw "buildGo112Package has been removed"; # added 2020-04-26
   buildGo112Module = throw "buildGo112Module has been removed"; # added 2020-04-26
   bundler_HEAD = bundler; # added 2015-11-15
+  caddy1 = throw "caddy 1.x has been removed from nixpkgs, as it's unmaintained: https://github.com/caddyserver/caddy/blob/master/.github/SECURITY.md#supported-versions"; # added 2020-10-02
   cantarell_fonts = cantarell-fonts; # added 2018-03-03
   cargo-tree = throw "cargo-tree has been removed, use the builtin `cargo tree` command instead."; # added 2020-08-20
   casperjs = throw "casperjs has been removed, it was abandoned by upstream and broken.";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2ba6493b1fc3..f171448f5dd9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1531,10 +1531,6 @@ in
   });
 
   caddy = callPackage ../servers/caddy { };
-  caddy1 = callPackage ../servers/caddy/v1.nix {
-    # https://github.com/lucas-clemente/quic-go/issues/2614
-    buildGoModule = buildGo114Module;
-  };
 
   traefik = callPackage ../servers/traefik { };