diff --git a/run-specs b/run-specs
index 9cb1028..0ca4117 100755
--- a/run-specs
+++ b/run-specs
@@ -1,3 +1,8 @@
 #!/bin/bash
 
-pipenv run mamba spec/*
+set -e
+
+export PYTHONPATH=${PWD}/spec
+
+cd spec/
+pipenv run mamba *_spec.py