diff --git a/Dockerfile.raspbian b/Dockerfile.raspbian
index bc21504..1d4e0d6 100644
--- a/Dockerfile.raspbian
+++ b/Dockerfile.raspbian
@@ -5,17 +5,21 @@ RUN [ "cross-build-start" ]
 
 RUN apt-get update \
         && apt-get install -y --no-install-recommends \
-            duplicity python-setuptools cron python-pexpect openssh-client \
+            cron \
+            duplicity \
             lftp \
             ncftp \
+            openssh-client \
             python-cloudfiles \
             python-gdata \
             python-oauthlib \
             python-paramiko \
+            python-pexpect \
+            python-pip \
+            python-setuptools \
             python-urllib3 \
             rsync \
             tahoe-lafs \
-            python-pip \
         && pip install -U boto  \
         && apt-get remove -y python-pip \
         && apt-get install -y --no-install-recommends \
diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 6b1b2f8..b9bd5bd 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -7,18 +7,22 @@ RUN apt-get update \
         && add-apt-repository ppa:duplicity-team/ppa \
         && apt-get update \
         && apt-get install -y --no-install-recommends \
-            duplicity python-setuptools python-pexpect openssh-client \
+            cron \
+            duplicity \
             lftp \
             ncftp \
+            openssh-client \
             python-cloudfiles \
             python-gdata \
             python-oauthlib \
             python-paramiko \
+            python-pexpect \
+            python-pip \
+            python-setuptools \
             python-swiftclient \
             python-urllib3 \
             rsync \
             tahoe-lafs \
-            python-pip \
         && pip install -U boto  \
         && apt-get autoremove -y python-pip \
         && apt-get clean \
diff --git a/itest.sh b/itest.sh
index dadc055..f9b5303 100755
--- a/itest.sh
+++ b/itest.sh
@@ -3,6 +3,10 @@ set -e
 
 echo "Performing backup tests"
 
+echo "Verify cron and crontab exist"
+type cron
+type crontab
+
 echo "Create test data..."
 mkdir -p /data && echo Test > /data/test.txt