diff --git a/test/modules/op/linspace.py b/test/modules/op/linspace.py
new file mode 100644
index 00000000..3b87a741
--- /dev/null
+++ b/test/modules/op/linspace.py
@@ -0,0 +1,31 @@
+# Copyright (c) 2025 Samsung Electronics Co., Ltd. All Rights Reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import torch
+
+from test.modules.base import TestModuleBase
+
+from test.utils import tag
+
+
+class SimpleLinspace(TestModuleBase):
+    def __init__(self):
+        super().__init__()
+
+    def forward(self, start, end, step):
+        return torch.linspace(start, end, step)
+
+    def get_example_inputs(self):
+        return (torch.tensor(3, dtype = torch.int32), torch.tensor(3, dtype = torch.int32), int(3),), {}
+
diff --git a/tico/serialize/circle_mapping.py b/tico/serialize/circle_mapping.py
index f001d04e..661d91dd 100644
--- a/tico/serialize/circle_mapping.py
+++ b/tico/serialize/circle_mapping.py
@@ -37,6 +37,7 @@ def to_circle_dtype(
         torch.int: circle.TensorType.TensorType.INT32,
         torch.int64: circle.TensorType.TensorType.INT64,
         torch.bool: circle.TensorType.TensorType.BOOL,
+        torch.float64: circle.TensorType.TensorType.FLOAT32, # ADDED
     }
 
     if torch_dtype not in dmap: