diff --git a/test/IO/test_tuple.py b/test/IO/test_tuple.py
index 7f3d0d24f..5ce008033 100644
--- a/test/IO/test_tuple.py
+++ b/test/IO/test_tuple.py
@@ -1,5 +1,6 @@
 import BioSimSpace as BSS
 
+
 def test_tuple():
     """Check that we can read from a tuple of files."""
     BSS.IO.readMolecules(("test/input/ala.crd", "test/input/ala.top"))
diff --git a/test/Sandpit/Exscientia/IO/test_tuple.py b/test/Sandpit/Exscientia/IO/test_tuple.py
index 93d1c384a..6b4d0474e 100644
--- a/test/Sandpit/Exscientia/IO/test_tuple.py
+++ b/test/Sandpit/Exscientia/IO/test_tuple.py
@@ -1,5 +1,6 @@
 import BioSimSpace.Sandpit.Exscientia as BSS
 
+
 def test_tuple():
     """Check that we can read from a tuple of files."""
     BSS.IO.readMolecules(("test/input/ala.crd", "test/input/ala.top"))