diff --git a/mastodon-container.nix b/mastodon-container.nix
index a00284b..7f1518c 100644
--- a/mastodon-container.nix
+++ b/mastodon-container.nix
@@ -113,7 +113,7 @@ in {
       nginx = mkOption {
         type = str;
         description = "Docker image to use for Proxy server.";
-        default = "nginx:1-alpine";
+        default = "nginx:alpine-slim";
       };
     };