diff --git a/nixos/modules/services/web-servers/nginx/default.nix b/nixos/modules/services/web-servers/nginx/default.nix
index f83413b4534e..2310912d0fde 100644
--- a/nixos/modules/services/web-servers/nginx/default.nix
+++ b/nixos/modules/services/web-servers/nginx/default.nix
@@ -65,6 +65,7 @@ let
         gzip_proxied any;
         gzip_comp_level 9;
         gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+        gzip_vary on;
       ''}
 
       ${optionalString (cfg.recommendedProxySettings) ''