We require an implementation of PSR-6 to work with this bridge.

Author: Nyholm

composer.json

@@ -17,13 +17,14 @@
         }
     ],
     "require":      {
-        "php":            "^5.5|^7.0",
-        "doctrine/cache": "^1.3",
-        "psr/cache":      "1.0.0"
+        "php":                      "^5.5|^7.0",
+        "doctrine/cache":           "^1.3",
+        "psr/cache-implementation": "~1.0"
     },
     "require-dev":  {
-        "phpunit/phpunit": "^5.1|^4.0",
-        "mockery/mockery": "^0.9.4"
+        "phpunit/phpunit":              "^5.1|^4.0",
+        "mockery/mockery":              "^0.9.4",
+        "cache/doctrine-adapter":       "@stable"
     },
     "autoload":     {
         "psr-4": {