diff --git a/docker/base/Dockerfile.j2 b/docker/base/Dockerfile.j2
index 045f761554..703bdfb8fd 100644
--- a/docker/base/Dockerfile.j2
+++ b/docker/base/Dockerfile.j2
@@ -358,6 +358,7 @@ COPY apt_preferences.{{ base_distro }} /etc/apt/preferences
       '901F9177AB97ACBE',
     ] %}
     {% set remote_apt_keys = [
+      'http://obs.linaro.org/ERP:/18.06/Debian_9/Release.key',
       'https://bintray.com/user/downloadSubjectPublicKey?username=bintray',
     ] %}
     {% set base_apt_packages = base_apt_packages +