diff --git a/phpbb/Dockerfile b/phpbb/Dockerfile
index 2bbf99b..7d017da 100644
--- a/phpbb/Dockerfile
+++ b/phpbb/Dockerfile
@@ -11,8 +11,8 @@ RUN apt-get update && apt-get install -y unzip bzip2 && rm -rf /var/lib/apt/list
 WORKDIR /var/www/html
 
 ENV PHPBB_VERSION 3.1.4
+ENV PHPBB_URL https://www.phpbb.com/files/release/phpBB-${PHPBB_VERSION}.tar.bz2
 ENV PHPBB_SHA512 cc13d34679d987b7c956999b273b109fd441dcc786d7612c4b726423d674ade5
-ENV PHPBB_URL https://www.phpbb.com/files/release/phpBB-3.1.4.tar.bz2
 ENV PHPBB_FILE phpBB.tar.bz2
 
 RUN curl -fSL ${PHPBB_URL} -o ${PHPBB_FILE} \