diff --git a/Dockerfile b/Dockerfile
index ca6aaba1..1b41dc6b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3-alpine
+FROM php:8.1.5-alpine
 
 RUN apk update && apk add git vim bash curl
 
diff --git a/composer.json b/composer.json
index fa84acc1..51b9476d 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "source": "https://github.com/plivo/plivo-php"
     },
     "require": {
-        "php": ">=7.1.0",
+        "php": ">=8.1.0",
         "guzzlehttp/guzzle": "^6.3 || ^7.0",
         "firebase/php-jwt": ">=5.2"
     },