diff --git a/test/freeflow/navierstokes/sincos/convergencetest.py b/test/freeflow/navierstokes/sincos/convergencetest.py
index 99d3837966f5e4c3a2e2353bb905bba488f82a4b..4a54c897b46dcc63b63fd39008174daa42c7d9e5 100755
--- a/test/freeflow/navierstokes/sincos/convergencetest.py
+++ b/test/freeflow/navierstokes/sincos/convergencetest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from math import *
 import subprocess
diff --git a/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/convergencetest.py b/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/convergencetest.py
index 6548362670d941409bb996c1ff91cbface471381..c3ad84b1a4c2e54db9d3521520a4ed7e30094a3c 100755
--- a/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/convergencetest.py
+++ b/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/convergencetest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from math import *
 import subprocess
diff --git a/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/manufactured_solution.py b/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/manufactured_solution.py
index e06ece60e357bfee1da173bd577eb9da113dd39e..b783c5c78ce86e6d4821216ece858c871449103a 100644
--- a/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/manufactured_solution.py
+++ b/test/multidomain/boundary/stokesdarcy/1p_1p/convergencetest/manufactured_solution.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 This script determines the source terms needed for analytical solutions for coupled Stokes/Darcy problems.
diff --git a/test/multidomain/facet/1p_1p/analytical/convergencetest.py b/test/multidomain/facet/1p_1p/analytical/convergencetest.py
index be03edeb745b2bd4b78e8005ce6d3c6a429a4fc1..1a6e4636f3a5303af6239690da23b2e9ff0fef12 100755
--- a/test/multidomain/facet/1p_1p/analytical/convergencetest.py
+++ b/test/multidomain/facet/1p_1p/analytical/convergencetest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from math import *
 import os.path
diff --git a/test/porousmediumflow/1p/implicit/network1d3d/convergencetest.py b/test/porousmediumflow/1p/implicit/network1d3d/convergencetest.py
index f1b2e18a6970779fdf1e8f3dff8c03e684f85aea..718a8b66dee9ac1e3eda55559178dc282745a70c 100755
--- a/test/porousmediumflow/1p/implicit/network1d3d/convergencetest.py
+++ b/test/porousmediumflow/1p/implicit/network1d3d/convergencetest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from math import *
 import subprocess