diff --git a/requirements.txt b/requirements.txt
index 5142c95..5794e8b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
-chaind<=0.0.1,>=0.0.1a3
+chaind<=0.0.1,>=0.0.1a4
 hexathon~=0.0.1a7
 chainlib-eth<=0.0.5,>0.0.4
+#chainlib-eth~=0.0.5a4
diff --git a/run_tests.sh b/run_tests.sh
new file mode 100644
index 0000000..2a36ca3
--- /dev/null
+++ b/run_tests.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -e
+set -x
+export PYTHONPATH=${PYTHONPATH:.}
+for f in `ls tests/*.py`; do
+	python $f
+done
+set +x
+set +e