diff --git a/Dockerfile b/Dockerfile
index 112cfc0..ad262b1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.4-cli-alpine3.11
+FROM php:8.0-cli-alpine3.14
 
 RUN apk update && \
     apk add --no-cache \
diff --git a/composer.json b/composer.json
index 0299190..9d7722d 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     }
   },
   "require": {
-    "php": "^7.4",
+    "php": "^7.4|^8.0",
     "symfony/http-kernel": "^4.4|^5.0",
     "symfony/dependency-injection": "^4.4|^5.0"
   },