diff --git a/tst/scripts/binary/binary.py b/tst/scripts/binary/binary.py
index bc6451f..bac9fba 100644
--- a/tst/scripts/binary/binary.py
+++ b/tst/scripts/binary/binary.py
@@ -32,7 +32,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "binary"
diff --git a/tst/scripts/binary_adi/binary_adi.py b/tst/scripts/binary_adi/binary_adi.py
index 5907c69..2362a50 100644
--- a/tst/scripts/binary_adi/binary_adi.py
+++ b/tst/scripts/binary_adi/binary_adi.py
@@ -31,7 +31,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "binary_adi"
diff --git a/tst/scripts/collisions/collisions.py b/tst/scripts/collisions/collisions.py
index f9ce5c7..a2ef4db 100644
--- a/tst/scripts/collisions/collisions.py
+++ b/tst/scripts/collisions/collisions.py
@@ -28,7 +28,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "collisions"
diff --git a/tst/scripts/coords/blast.py b/tst/scripts/coords/blast.py
index 03a9404..b387fdf 100644
--- a/tst/scripts/coords/blast.py
+++ b/tst/scripts/coords/blast.py
@@ -27,7 +27,8 @@
 import h5py
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "blast"
diff --git a/tst/scripts/diffusion/alpha_disk.py b/tst/scripts/diffusion/alpha_disk.py
index 2a28ba4..b75734a 100644
--- a/tst/scripts/diffusion/alpha_disk.py
+++ b/tst/scripts/diffusion/alpha_disk.py
@@ -28,7 +28,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "alpha_disk"
diff --git a/tst/scripts/diffusion/thermal_diffusion.py b/tst/scripts/diffusion/thermal_diffusion.py
index a76ce98..4df463c 100644
--- a/tst/scripts/diffusion/thermal_diffusion.py
+++ b/tst/scripts/diffusion/thermal_diffusion.py
@@ -28,7 +28,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "thermal_diffusion"
diff --git a/tst/scripts/diffusion/viscous_diffusion.py b/tst/scripts/diffusion/viscous_diffusion.py
index c3e44d8..023859a 100644
--- a/tst/scripts/diffusion/viscous_diffusion.py
+++ b/tst/scripts/diffusion/viscous_diffusion.py
@@ -27,7 +27,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "viscous_diffusion"
diff --git a/tst/scripts/disk/disk.py b/tst/scripts/disk/disk.py
index d57edb7..917adfe 100644
--- a/tst/scripts/disk/disk.py
+++ b/tst/scripts/disk/disk.py
@@ -29,7 +29,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "disk"
diff --git a/tst/scripts/disk_nbody/disk_nbody.py b/tst/scripts/disk_nbody/disk_nbody.py
index 915c273..27081c4 100644
--- a/tst/scripts/disk_nbody/disk_nbody.py
+++ b/tst/scripts/disk_nbody/disk_nbody.py
@@ -29,7 +29,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "disk_nbody"
diff --git a/tst/scripts/drag/drag.py b/tst/scripts/drag/drag.py
index b61a674..ce5e09c 100644
--- a/tst/scripts/drag/drag.py
+++ b/tst/scripts/drag/drag.py
@@ -28,7 +28,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "drag"
diff --git a/tst/scripts/nbody/nbody.py b/tst/scripts/nbody/nbody.py
index 9b92c59..fbbc87f 100644
--- a/tst/scripts/nbody/nbody.py
+++ b/tst/scripts/nbody/nbody.py
@@ -33,7 +33,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "nbody"
diff --git a/tst/scripts/ssheet/ssheet.py b/tst/scripts/ssheet/ssheet.py
index 00f75dc..435bde3 100644
--- a/tst/scripts/ssheet/ssheet.py
+++ b/tst/scripts/ssheet/ssheet.py
@@ -30,7 +30,8 @@
 import matplotlib.colors as colors
 import matplotlib.pyplot as plt
 import matplotlib
-matplotlib.use('Agg')  # Use the Agg backend to avoid issues with DISPLAY not being set
+
+matplotlib.use("Agg")  # Use the Agg backend to avoid issues with DISPLAY not being set
 
 _nranks = 1
 _file_id = "ssheet"