diff --git a/composer.json b/composer.json
index 6ed309e..9624f06 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
         "predis/predis": "^1.0",
         "mito/yii2-sentry": "^1.0",
         "minime/annotations": "~3.0",
-        "spomky-labs/otphp": "^8.3",
+        "spomky-labs/otphp": "8.3.1",
         "bacon/bacon-qr-code": "^1.0"
     },
     "require-dev": {