diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index a96f2a3..73c477b 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -17,13 +17,15 @@ FROM base AS dev
 
 WORKDIR /app
 
+ARG xdebug_version=2.9.0
+
 ENV PATH="./bin:./vendor/bin:$PATH"
 
 RUN apt update -yqq \
   && apt install -yqq \
     pv \
     vim \
-  && pecl install xdebug-2.9.0 \
+  && pecl install xdebug-${xdebug_version} \
   && docker-php-ext-enable xdebug
 
 COPY --from=composer:1 /usr/bin/composer /usr/bin/composer