diff --git a/Dockerfile b/Dockerfile
index 5f6ee84..2165eda 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3-alpine
+FROM php:7.4-alpine
 
 LABEL "com.github.actions.name"="OSKAR-PHP-CS-Fixer"
 LABEL "com.github.actions.description"="check php files"