diff --git a/build_debug_docker_j2.sh b/build_debug_docker_j2.sh
index 3655ac037b..0b167cf0f3 100755
--- a/build_debug_docker_j2.sh
+++ b/build_debug_docker_j2.sh
@@ -28,7 +28,7 @@ debs/{{ deb }}{{' '}}
 {% if $3 is defined %}
 {% if $3|length %}
 
-RUN apt-get install -f -y \
+RUN apt-get update && apt-get install -f -y \
 {% for dbg in $3.split(' ') -%}
 {{ dbg }}{{' '}}
 {%- endfor %}