diff --git a/.travis.yml b/.travis.yml
index a19f043..3ba1048 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,6 +23,7 @@ before_install:
 
 install:
   - pip install -r requirements.txt
+  - pi pinstall jip==0.7
   - pip install -e .
   - jip install org.xerial:sqlite-jdbc:3.7.2
   - jip install org.hsqldb:hsqldb:1.8.0.10
diff --git a/ci/before_install.sh b/ci/before_install.sh
index 87c0cb6..8e544d2 100755
--- a/ci/before_install.sh
+++ b/ci/before_install.sh
@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 sudo apt-get update -qq
 sudo apt-get install -qq openjdk-7-jdk openjdk-7-jre
diff --git a/ci/before_install_jython.sh b/ci/before_install_jython.sh
index db7de6a..2b01f3b 100755
--- a/ci/before_install_jython.sh
+++ b/ci/before_install_jython.sh
@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 pip install jip==0.7
 jip install org.python:$JYTHON
diff --git a/ci/before_install_nonjython.sh b/ci/before_install_nonjython.sh
index a43d70d..8c654bd 100755
--- a/ci/before_install_nonjython.sh
+++ b/ci/before_install_nonjython.sh
@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/bin/bash
+set -e
 
 cat requirements_python.txt >> requirements.txt
 ln -s $VIRTUAL_ENV ~/myvirtualenv
diff --git a/ci/install.sh b/ci/install.sh
index aa79b1b..a1a8065 100755
--- a/ci/install.sh
+++ b/ci/install.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
+set -e
+
 pip install jip==0.7
 
 install="${TRAVIS_BUILD_DIR}/ci/install_${BACKEND}.sh"