diff --git a/clearml_serving/engines/triton/triton_helper.py b/clearml_serving/engines/triton/triton_helper.py
index 533d06a..ff606cb 100644
--- a/clearml_serving/engines/triton/triton_helper.py
+++ b/clearml_serving/engines/triton/triton_helper.py
@@ -422,6 +422,8 @@ class TritonHelper(object):
             return "FP32"
         elif np_dtype == np.float64:
             return "FP64"
+        elif np_dtype == str:
+            return "STRING"
         elif np_dtype == np.object_ or np_dtype.type == np.bytes_:
             return "BYTES"
         return None