diff --git a/concrete/numpy/np_dtypes_helpers.py b/concrete/numpy/np_dtypes_helpers.py
index 0e942ec8f..f37a41aea 100644
--- a/concrete/numpy/np_dtypes_helpers.py
+++ b/concrete/numpy/np_dtypes_helpers.py
@@ -22,8 +22,12 @@ from ..common.tracing import BaseTracer
 from ..common.values import BaseValue, TensorValue
 
 NUMPY_TO_COMMON_DTYPE_MAPPING: Dict[numpy.dtype, BaseDataType] = {
+    numpy.dtype(numpy.int8): Integer(8, is_signed=True),
+    numpy.dtype(numpy.int16): Integer(16, is_signed=True),
     numpy.dtype(numpy.int32): Integer(32, is_signed=True),
     numpy.dtype(numpy.int64): Integer(64, is_signed=True),
+    numpy.dtype(numpy.uint8): Integer(8, is_signed=False),
+    numpy.dtype(numpy.uint16): Integer(16, is_signed=False),
     numpy.dtype(numpy.uint32): Integer(32, is_signed=False),
     numpy.dtype(numpy.uint64): Integer(64, is_signed=False),
     numpy.dtype(numpy.float32): Float(32),
diff --git a/tests/numpy/test_np_dtypes_helpers.py b/tests/numpy/test_np_dtypes_helpers.py
index 13f8c9ef6..7f2a9cfab 100644
--- a/tests/numpy/test_np_dtypes_helpers.py
+++ b/tests/numpy/test_np_dtypes_helpers.py
@@ -16,10 +16,18 @@ from concrete.numpy.np_dtypes_helpers import (
 @pytest.mark.parametrize(
     "numpy_dtype,expected_common_type",
     [
+        pytest.param(numpy.int8, Integer(8, is_signed=True)),
+        pytest.param("int8", Integer(8, is_signed=True)),
+        pytest.param(numpy.int16, Integer(16, is_signed=True)),
+        pytest.param("int16", Integer(16, is_signed=True)),
         pytest.param(numpy.int32, Integer(32, is_signed=True)),
         pytest.param("int32", Integer(32, is_signed=True)),
         pytest.param(numpy.int64, Integer(64, is_signed=True)),
         pytest.param("int64", Integer(64, is_signed=True)),
+        pytest.param(numpy.uint8, Integer(8, is_signed=False)),
+        pytest.param("uint8", Integer(8, is_signed=False)),
+        pytest.param(numpy.uint16, Integer(16, is_signed=False)),
+        pytest.param("uint16", Integer(16, is_signed=False)),
         pytest.param(numpy.uint32, Integer(32, is_signed=False)),
         pytest.param("uint32", Integer(32, is_signed=False)),
         pytest.param(numpy.uint64, Integer(64, is_signed=False)),