diff --git a/Makefile b/Makefile
index cec5981..44ca6e2 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ include docker.mk
 
 .PHONY: test
 
-PHP_VER ?= 8.3
+PHP_VER ?= 8.4
 
 test:
 	cd ./tests && PHP_VER=$(PHP_VER) ./run.sh