diff --git a/pelicun/tests/model/test_damage_model.py b/pelicun/tests/model/test_damage_model.py
index ba7482acb..fcd2b8465 100644
--- a/pelicun/tests/model/test_damage_model.py
+++ b/pelicun/tests/model/test_damage_model.py
@@ -620,6 +620,7 @@ def test__prepare_dmg_quantities(self, assessment_instance):
                 ('A', '0', '1', '0', '1'): [-1, 0, 1, 2, 3],  # block 1
                 ('A', '0', '1', '0', '2'): [3, -1, 0, 1, 2],  # block 2
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid', 'block'])
 
         component_sample = pd.DataFrame(
@@ -666,6 +667,7 @@ def test__prepare_dmg_quantities(self, assessment_instance):
             {
                 ('A', '0', '1', '0', '1'): [-1, 0, 1, 2, 3],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid', 'block'])
 
         component_sample = pd.DataFrame(
@@ -705,6 +707,7 @@ def test__prepare_dmg_quantities(self, assessment_instance):
                 ('A', '0', '1', '0', '1'): [-1, 0],
                 ('A', '0', '1', '1', '1'): [1, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid', 'block'])
 
         component_sample = pd.DataFrame(
@@ -761,6 +764,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.B', '1', '1', '0'): [0, 0, 1],
                 ('CMP.B', '1', '1', '1'): [1, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.B": {"DS1": "CMP.A_DS4"}}
@@ -776,6 +780,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.B', '1', '1', '0'): [0, 0, 1],
                     ('CMP.B', '1', '1', '1'): [1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -790,6 +795,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.B', '1', '1', '0'): [0, 0, 1],
                 ('CMP.B', '1', '1', '1'): [1, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.B": {"DS1": "CMP.A_NA"}}
@@ -805,6 +811,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.B', '1', '1', '0'): [0, 0, 1],
                     ('CMP.B', '1', '1', '1'): [1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -821,6 +828,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.B', '1', '1', '0'): [0, 0, 1],
                 ('CMP.B', '2', '1', '0'): [1, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.B-LOC": {"DS1": "CMP.A_DS4"}}
@@ -836,6 +844,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.B', '1', '1', '0'): [0, 0, 1],
                     ('CMP.B', '2', '1', '0'): [1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -853,6 +862,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.C', '1', '1', '0'): [0, 0, 0],
                 ('CMP.D', '1', '1', '0'): [0, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.A": {"DS1": "ALL_DS2"}}
@@ -868,6 +878,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.C', '1', '1', '0'): [2, 0, 0],
                     ('CMP.D', '1', '1', '0'): [2, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -884,6 +895,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.B', '1', '1', '0'): [0, 0, 1],
                 ('CMP.B', '1', '1', '1'): [1, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.B": {"DS1": "CMP.A_NA"}}
@@ -899,6 +911,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.B', '1', '1', '0'): [0, 0, 1],
                     ('CMP.B', '1', '1', '1'): [1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -913,6 +926,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.B', '1', '1', '0'): [0, 0, 1],
                 ('CMP.B', '2', '1', '0'): [1, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.B-LOC": {"DS1": "CMP.A_NA"}}
@@ -928,6 +942,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.B', '1', '1', '0'): [0, 0, 1],
                     ('CMP.B', '2', '1', '0'): [1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -944,6 +959,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.C', '1', '1', '0'): [0, 0, 0],
                 ('CMP.C', '2', '1', '0'): [0, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.A-LOC": {"DS1": "ALL_NA"}}
@@ -961,6 +977,7 @@ def test__perform_dmg_task(self, assessment_instance):
                     ('CMP.C', '1', '1', '0'): [0, 0, -1],
                     ('CMP.C', '2', '1', '0'): [-1, 0, 0],
                 },
+                dtype='int32',
             ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid']),
         )
 
@@ -972,6 +989,7 @@ def test__perform_dmg_task(self, assessment_instance):
                 ('CMP.A', '1', '1', '0'): [0, 0, 0],
                 ('CMP.B', '1', '1', '1'): [0, 0, 0],
             },
+            dtype='int32',
         ).rename_axis(columns=['cmp', 'loc', 'dir', 'uid'])
 
         dmg_process = {"1_CMP.C": {"DS1": "CMP.A_DS4"}}