diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 423a7a3..3bedfdb 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -26,11 +26,11 @@
 		},
 		"ghcr.io/devcontainers-contrib/features/curl-apt-get:1": {},
 		"ghcr.io/devcontainers-contrib/features/wget-apt-get:1": {}
-	}
+	},
 
 	// Use 'postCreateCommand' to run commands after the container is created.
 	// "postCreateCommand": "sudo chmod a+x \"$(pwd)\" && sudo rm -rf /var/www/html && sudo ln -s \"$(pwd)\" /var/www/html"
-
+	"postCreateCommand": "sudo docker-php-ext-install bcmath"
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"
 }