diff --git a/composer.json b/composer.json
index 2df59c32..6182ae08 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "ext-inotify": "*",
     "ext-curl": "*",
     "ext-openssl": "*",
-    "amphp/amp": "*"
+    "amphp/amp": "v1.2.2"
   },
   "autoload": {
     "psr-4": {