diff --git a/nixos/modules/services/web-servers/h2o/default.nix b/nixos/modules/services/web-servers/h2o/default.nix
index a8e419401230..e8441a3a6347 100644
--- a/nixos/modules/services/web-servers/h2o/default.nix
+++ b/nixos/modules/services/web-servers/h2o/default.nix
@@ -230,6 +230,9 @@ let
                     ssl = (lib.recursiveUpdate tlsRecAttrs value.tls.extraSettings) // {
                       inherit identity;
                     };
+                  }
+                  // lib.optionalAttrs (value.host != null) {
+                    host = value.host;
                   };
               };
           };
diff --git a/nixos/modules/services/web-servers/h2o/vhost-options.nix b/nixos/modules/services/web-servers/h2o/vhost-options.nix
index 907551113826..4bbca40974bf 100644
--- a/nixos/modules/services/web-servers/h2o/vhost-options.nix
+++ b/nixos/modules/services/web-servers/h2o/vhost-options.nix
@@ -37,6 +37,15 @@ in
       '';
     };
 
+    host = mkOption {
+      type = types.nullOr types.nonEmptyStr;
+      default = null;
+      example = "127.0.0.1";
+      description = ''
+        Set the host address for this virtual host.
+      '';
+    };
+
     http = mkOption {
       type = types.nullOr (
         types.submodule {