diff --git a/requirements-test.txt b/requirements-test.txt
index c1a63d9..74e7326 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -10,6 +10,7 @@ seaborn~=0.11.2
 sqlalchemy~=1.4.23
 xlrd~=2.0.1
 openpyxl~=3.0.7
+h5py~=3.11.0
 
 # test-utils deps
 pytest~=6.2.5
diff --git a/tests/helper.py b/tests/helper.py
index 9e32b67..d4dad84 100644
--- a/tests/helper.py
+++ b/tests/helper.py
@@ -51,7 +51,6 @@ def in_temp_dir():
 
 
 def run(data, run_code=True):
-
     pec = data.get("DC_PEC", "")
     stu_code = data.get("DC_CODE", "")
     sol_code = data.get("DC_SOLUTION", "")