diff --git a/assets/build/install.sh b/assets/build/install.sh
index d8041e7b..332a3d0f 100755
--- a/assets/build/install.sh
+++ b/assets/build/install.sh
@@ -311,5 +311,5 @@ stderr_logfile=${GITLAB_LOG_DIR}/supervisor/%(program_name)s.log
 EOF
 
 # purge build dependencies and cleanup apt
-apt-get purge -y --auto-remove ${BUILD_DEPENDENCIES}
+DEBIAN_FRONTEND=noninteractive apt-get purge -y --auto-remove ${BUILD_DEPENDENCIES}
 rm -rf /var/lib/apt/lists/*