diff --git a/CHANGELOG.md b/CHANGELOG.md
index 454f858..d72c562 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+## [3.1.1] - 2020-05-22
+
+### Added
+
+* Prerender cdn file postfix that is adding through config param.
+
+### Changed
+
+None.
+
+### Removed
+
+None.
+
 ## [3.1.0] - 2020-05-21
 
 ### Added
diff --git a/configuration/defaults/___server.yaml b/configuration/defaults/___server.yaml
index c52b250..3ed124f 100644
--- a/configuration/defaults/___server.yaml
+++ b/configuration/defaults/___server.yaml
@@ -24,6 +24,7 @@ defaults:
       queryParams: [] # params that will be passed to CDN to find files. Params are sorted alphabetically.
       cdnUrl: null # CDN url
       cdnPath: / # CDN folder relative to root path  with trailing slash (/)
+      cdnFilePostfix: null
       url: null # Proxy pass URL for bots, with schema.
       resolver: "8.8.8.8 8.8.4.4 1.1.1.1 1.0.0.1" # nginx "resolver" option to force DNS resolution and prevent caching of IPs
       headers: [] # Authorization headers (or others), format: key - $headerName, value - $headerValue
diff --git a/src/Handler/NginxHandler.php b/src/Handler/NginxHandler.php
index 594f61c..92388a5 100644
--- a/src/Handler/NginxHandler.php
+++ b/src/Handler/NginxHandler.php
@@ -85,6 +85,7 @@ public function generateConfig(HeaderInterface $header): void
                 'prerenderQueryParams'    => $this->getSorted('server.prerender.queryParams'),
                 'CDNUrl'                  => $this->getParamWithoutTrailingSlash('server.prerender.cdnUrl'),
                 'CDNPath'                 => $this->getParamWithoutTrailingSlash('server.prerender.cdnPath'),
+                'CDNFilePostfix'          => $this->configuration->get('server.prerender.cdnFilePostfix', null),
                 'prerenderHeaders'        => $this->configuration->get('server.prerender.headers', []),
                 'prerenderResolver'       => $this->configuration->get('server.prerender.resolver', false),
                 'headers'                 => $header->convert($this->configuration),
@@ -159,8 +160,8 @@ private function getParamWithoutTrailingSlash(string $key)
     }
 
     /**
-     * @param string $key
-     * @param array<mixed>  $default
+     * @param string       $key
+     * @param array<mixed> $default
      *
      * @return bool|string
      */
diff --git a/src/Handler/templates/nginx_default.conf.php b/src/Handler/templates/nginx_default.conf.php
index 144d6e2..16826d9 100644
--- a/src/Handler/templates/nginx_default.conf.php
+++ b/src/Handler/templates/nginx_default.conf.php
@@ -310,7 +310,7 @@
               <?php endif;?>
                 if ($prerender = 1) {
                     #setting prerender as a variable forces DNS resolution since nginx caches IPs and doesnt play well with load balancing
-                    rewrite .* <?=$CDNPath?>$req_uri$q break;
+                    rewrite .* <?= $CDNPath ?>$req_uri$q<?= ($CDNFilePostfix) ? "-" . $CDNFilePostfix : null ?> break;
                     proxy_pass "<?=$CDNUrl?>";
                     break;
                 }