diff --git a/Dockerfile b/Dockerfile
index faf670ef..b9fb483e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN groupadd -g 1000 apl \
 
 # install packages
 RUN apt-get update -q \
+ && apt-get upgrade -qy \
  && apt-get install -y --no-install-recommends \
  unzip \
  build-essential \
diff --git a/tests/Dockerfile b/tests/Dockerfile
index a57b2f59..391aa407 100644
--- a/tests/Dockerfile
+++ b/tests/Dockerfile
@@ -11,6 +11,7 @@ RUN groupadd -g 1000 apl \
 
 # install packages
 RUN apt-get update -q \
+ && apt-get upgrade -qy \
  && apt-get install -y --no-install-recommends \
  unzip \
  build-essential \