diff --git a/debian-jessie-osmocom/Dockerfile b/debian-jessie-osmocom/Dockerfile
index 49835c62..b2f224ff 100644
--- a/debian-jessie-osmocom/Dockerfile
+++ b/debian-jessie-osmocom/Dockerfile
@@ -9,6 +9,7 @@ RUN	apt-key add /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
 RUN	apt-get update && apt-get install -y \
+	telnet \
 	osmocom-sgsn \
 	osmocom-nitb \
 	osmocom-ipaccess-utils \
diff --git a/osmo-stp-master/Dockerfile b/osmo-stp-master/Dockerfile
index cd043132..7cbc4742 100644
--- a/osmo-stp-master/Dockerfile
+++ b/osmo-stp-master/Dockerfile
@@ -9,6 +9,7 @@ RUN	apt-key add /tmp/Release.key && \
 	echo "deb http://download.opensuse.org/repositories/network:/osmocom:/nightly/Debian_8.0/ ./" > /etc/apt/sources.list.d/osmocom-nightly.list
 
 RUN	apt-get update && apt-get install -y \
+	telnet \
 	libosmocore-dev \
 	libosmo-netif-dev \
 	libsctp-dev