diff --git a/roles/custom/matrix-client-cinny/defaults/main.yml b/roles/custom/matrix-client-cinny/defaults/main.yml
index bd3da6166..9c829044d 100644
--- a/roles/custom/matrix-client-cinny/defaults/main.yml
+++ b/roles/custom/matrix-client-cinny/defaults/main.yml
@@ -7,7 +7,7 @@ matrix_client_cinny_container_image_self_build: false
 matrix_client_cinny_container_image_self_build_repo: "https://github.com/ajbura/cinny.git"
 
 # renovate: datasource=docker depName=ajbura/cinny
-matrix_client_cinny_version: v3.2.0
+matrix_client_cinny_version: v4.0.0
 matrix_client_cinny_docker_image: "{{ matrix_client_cinny_docker_image_name_prefix }}ajbura/cinny:{{ matrix_client_cinny_version }}"
 matrix_client_cinny_docker_image_name_prefix: "{{ 'localhost/' if matrix_client_cinny_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_client_cinny_docker_image_force_pull: "{{ matrix_client_cinny_docker_image.endswith(':latest') }}"
diff --git a/roles/custom/matrix-client-cinny/templates/nginx.conf.j2 b/roles/custom/matrix-client-cinny/templates/nginx.conf.j2
index fba16bbdc..3ae9cae7d 100644
--- a/roles/custom/matrix-client-cinny/templates/nginx.conf.j2
+++ b/roles/custom/matrix-client-cinny/templates/nginx.conf.j2
@@ -51,16 +51,20 @@ http {
 		root /usr/share/nginx/html;
 
 		location / {
-			index index.html index.htm;
-		}
+			# Inspired by: https://raw.githubusercontent.com/cinnyapp/cinny/dev/docker-nginx.conf
 
-		location ~* ^/(config(.+)?\.json$|(.+)\.html$|i18n) {
-			expires -1;
-		}
-
-		error_page 500 502 503 504 /50x.html;
-		location = /50x.html {
 			root /usr/share/nginx/html;
+
+			rewrite ^/config.json$ /config.json break;
+			rewrite ^/manifest.json$ /manifest.json break;
+
+			rewrite ^.*/olm.wasm$ /olm.wasm break;
+			rewrite ^/pdf.worker.min.js$ /pdf.worker.min.js break;
+
+			rewrite ^/public/(.*)$ /public/$1 break;
+			rewrite ^/assets/(.*)$ /assets/$1 break;
+
+			rewrite ^(.+)$ /index.html break;
 		}
 	}
 }