diff --git a/tests/start-up-and-test.sh b/tests/start-up-and-test.sh
index 663e8fa..9ba94b4 100755
--- a/tests/start-up-and-test.sh
+++ b/tests/start-up-and-test.sh
@@ -1,5 +1,6 @@
 #!/bin/bash -eu
 
+rm -rf pypicohsm
 git clone https://github.com/polhenarejos/pypicohsm.git
 pip3 install -e pypicohsm
 /usr/sbin/pcscd &