diff --git a/sh/tests/Dockerfile b/sh/tests/Dockerfile
index 4a4dc23c7..63d2c1e43 100644
--- a/sh/tests/Dockerfile
+++ b/sh/tests/Dockerfile
@@ -2,8 +2,8 @@ FROM docker.01-edu.org/debian:10.9-slim
 
 RUN apt-get update
 RUN apt-get -y install jq curl
-RUN apt-get -y install python-pip
-RUN pip install -U pytest
+RUN apt-get -y install python3-pip
+RUN pip3 install -U pytest
 
 WORKDIR /app/assets/superhero
 RUN curl --remote-name --location https://demo.01-edu.org/assets/superhero/all.json
diff --git a/sh/tests/entrypoint.sh b/sh/tests/entrypoint.sh
index bb04bb170..e3994c347 100755
--- a/sh/tests/entrypoint.sh
+++ b/sh/tests/entrypoint.sh
@@ -9,7 +9,7 @@ cd app
 if test -f "${EXERCISE}_test.sh"; then
 	bash "${EXERCISE}_test.sh"
 elif test -f "${EXERCISE}_test.py"; then
-	pytest "${EXERCISE}_test.py"
+	pytest -x "${EXERCISE}_test.py"
 else
 	echo "No test file found for the exercise : $EXERCISE"
 	exit 1