diff --git a/abipy/integration_tests/itest_ebands.py b/abipy/integration_tests/itest_ebands.py
index 8c66ac9b1..3c63ceb30 100644
--- a/abipy/integration_tests/itest_ebands.py
+++ b/abipy/integration_tests/itest_ebands.py
@@ -12,6 +12,7 @@
 
 from abipy.core.testing import has_matplotlib
 
+import pytest
 
 def make_scf_nscf_inputs(tvars, pp_paths, nstep=50):
     """
diff --git a/abipy/integration_tests/itest_frohlich_zpr.py b/abipy/integration_tests/itest_frohlich_zpr.py
index e58529ca9..982b3969a 100644
--- a/abipy/integration_tests/itest_frohlich_zpr.py
+++ b/abipy/integration_tests/itest_frohlich_zpr.py
@@ -6,6 +6,7 @@
 
 from abipy.dfpt.ddb import DdbFile
 
+import pytest
 
 def make_scf_input(usepaw=0):
     """Returns the GS input file"""
diff --git a/abipy/integration_tests/itest_gw.py b/abipy/integration_tests/itest_gw.py
index 89bfa0fc0..27bde72d5 100644
--- a/abipy/integration_tests/itest_gw.py
+++ b/abipy/integration_tests/itest_gw.py
@@ -7,6 +7,7 @@
 
 #from abipy.core.testing import has_abinit, has_matplotlib
 
+import pytest
 
 def make_g0w0_inputs(ngkpt, tvars):
     """
diff --git a/abipy/integration_tests/itest_relaxations.py b/abipy/integration_tests/itest_relaxations.py
index 6f56bd256..677557fec 100644
--- a/abipy/integration_tests/itest_relaxations.py
+++ b/abipy/integration_tests/itest_relaxations.py
@@ -9,6 +9,7 @@
 
 from abipy.core.testing import has_matplotlib
 
+import pytest
 
 def ion_relaxation(tvars, ntime=50):
     structure = abilab.Structure.from_file(abidata.cif_file("si.cif"))