diff --git a/composer.json b/composer.json
index 541c6716f4..f44191b367 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "guzzlehttp/guzzle": "^6.2.1|^7.0",
     "guzzlehttp/psr7": "^1.7|^2.0",
     "psr/http-message": "^1.0",
-    "psr/cache": "^1.0|^2.0"
+    "psr/cache": "^1.0|^2.0|^3.0"
   },
   "require-dev": {
     "guzzlehttp/promises": "0.1.1|^1.3",