garmin · gracepipho · Jan 8, 2026 · Jan 8, 2026
diff --git a/garmin_fit_sdk/__init__.py b/garmin_fit_sdk/__init__.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 
@@ -22,4 +22,4 @@
 from garmin_fit_sdk.stream import Stream
 from garmin_fit_sdk.util import FIT_EPOCH_S, convert_timestamp_to_datetime
 
-__version__ = '21.178.0'
+__version__ = '21.188.0'
diff --git a/garmin_fit_sdk/accumulator.py b/garmin_fit_sdk/accumulator.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/garmin_fit_sdk/bitstream.py b/garmin_fit_sdk/bitstream.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/garmin_fit_sdk/crc_calculator.py b/garmin_fit_sdk/crc_calculator.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/garmin_fit_sdk/decoder.py b/garmin_fit_sdk/decoder.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 
@@ -217,7 +217,7 @@ def __decode_mesg_def(self):
             field_definition = {
                 "field_id": self._stream.read_byte(),
                 "size": self._stream.read_byte(),
-                "base_type": self._stream.read_byte(),
+                "base_type": self._stream.read_byte() & FIT.BASE_TYPE_MASK,
             }
 
             if field_definition["base_type"] not in FIT.BASE_TYPE_DEFINITIONS:
@@ -636,14 +636,15 @@ def __add_field_description_to_profile(self, message):
             return
 
         if message["fit_base_type_id"] is not None:
-            base_type_code = FIT.BASE_TYPE_DEFINITIONS[message["fit_base_type_id"]['raw_field_value']]["type_code"]
+            masked_base_type = message["fit_base_type_id"]['raw_field_value'] & FIT.BASE_TYPE_MASK
+            base_type_code = FIT.BASE_TYPE_DEFINITIONS[masked_base_type]["type_code"]
         else:
             base_type_code = None
 
         self._developer_data_defs[message['developer_data_index']['raw_field_value']]['fields'].append({
             'developer_data_index': message['developer_data_index']['raw_field_value'],
             'field_definition_number': message['field_definition_number']['raw_field_value'],
-            'fit_base_type_id': message['fit_base_type_id']['raw_field_value'] if 'fit_base_type_id' in message else None,
+            'fit_base_type_id': message['fit_base_type_id']['raw_field_value'] & FIT.BASE_TYPE_MASK if 'fit_base_type_id' in message else None,
             'base_type_code': base_type_code,
             'name': message['name']['raw_field_value'] if 'name' in message else None,
             'array': message['array']['raw_field_value'] if 'array' in message else None,

diff --git a/garmin_fit_sdk/fit.py b/garmin_fit_sdk/fit.py
@@ -7,29 +7,29 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 
 BASE_TYPE = {
     "ENUM": 0x00,
     "SINT8": 0x01,
     "UINT8": 0x02,
-    "SINT16": 0x83,
-    "UINT16": 0x84,
-    "SINT32": 0x85,
-    "UINT32": 0x86,
+    "SINT16": 0x03,
+    "UINT16": 0x04,
+    "SINT32": 0x05,
+    "UINT32": 0x06,
     "STRING": 0x07,
-    "FLOAT32": 0x88,
-    "FLOAT64": 0x89,
+    "FLOAT32": 0x08,
+    "FLOAT64": 0x09,
     "UINT8Z": 0x0A,
-    "UINT16Z": 0x8B,
-    "UINT32Z": 0x8C,
+    "UINT16Z": 0x0B,
+    "UINT32Z": 0x0C,
     "BYTE": 0x0D,
-    "SINT64": 0x8E,
-    "UINT64": 0x8F,
-    "UINT64Z": 0x90
+    "SINT64": 0x0E,
+    "UINT64": 0x0F,
+    "UINT64Z": 0x10
 }
 
 FIELD_TYPE_TO_BASE_TYPE = {
@@ -55,22 +55,24 @@
     0x00: {'size': 1, 'type': BASE_TYPE["ENUM"], 'signed': False, 'type_code': 'B', 'invalid': 0xFF},
     0x01: {'size': 1, 'type': BASE_TYPE["SINT8"], 'signed': True, 'type_code': 'b', 'invalid': 0x7F},
     0x02: {'size': 1, 'type': BASE_TYPE["UINT8"], 'signed': False, 'type_code': 'B', 'invalid': 0xFF},
-    0x83: {'size': 2, 'type': BASE_TYPE["SINT16"], 'signed': True, 'type_code': 'h', 'invalid': 0x7FFF},
-    0x84: {'size': 2, 'type': BASE_TYPE["UINT16"], 'signed': False, 'type_code': 'H', 'invalid': 0xFFFF},
-    0x85: {'size': 4, 'type': BASE_TYPE["SINT32"], 'signed': True, 'type_code': 'i', 'invalid': 0x7FFFFFFF},
-    0x86: {'size': 4, 'type': BASE_TYPE["UINT32"], 'signed': False, 'type_code': 'I', 'invalid': 0xFFFFFFFF},
+    0x03: {'size': 2, 'type': BASE_TYPE["SINT16"], 'signed': True, 'type_code': 'h', 'invalid': 0x7FFF},
+    0x04: {'size': 2, 'type': BASE_TYPE["UINT16"], 'signed': False, 'type_code': 'H', 'invalid': 0xFFFF},
+    0x05: {'size': 4, 'type': BASE_TYPE["SINT32"], 'signed': True, 'type_code': 'i', 'invalid': 0x7FFFFFFF},
+    0x06: {'size': 4, 'type': BASE_TYPE["UINT32"], 'signed': False, 'type_code': 'I', 'invalid': 0xFFFFFFFF},
     0x07: {'size': 1, 'type': BASE_TYPE["STRING"], 'signed': False, 'type_code': 's', 'invalid': 0x00},
-    0x88: {'size': 4, 'type': BASE_TYPE["FLOAT32"], 'signed': True, 'type_code': 'f', 'invalid': 0xFFFFFFFF},
-    0x89: {'size': 8, 'type': BASE_TYPE["FLOAT64"], 'signed': True, 'type_code': 'd', 'invalid': 0xFFFFFFFFFFFFFFFF},
+    0x08: {'size': 4, 'type': BASE_TYPE["FLOAT32"], 'signed': True, 'type_code': 'f', 'invalid': 0xFFFFFFFF},
+    0x09: {'size': 8, 'type': BASE_TYPE["FLOAT64"], 'signed': True, 'type_code': 'd', 'invalid': 0xFFFFFFFFFFFFFFFF},
     0x0A: {'size': 1, 'type': BASE_TYPE["UINT8Z"], 'signed': False, 'type_code': 'B', 'invalid': 0x00},
-    0x8B: {'size': 2, 'type': BASE_TYPE["UINT16Z"], 'signed': False, 'type_code': 'H', 'invalid': 0x0000},
-    0x8C: {'size': 4, 'type': BASE_TYPE["UINT32Z"], 'signed': False, 'type_code': 'I', 'invalid': 0x00000000},
+    0x0B: {'size': 2, 'type': BASE_TYPE["UINT16Z"], 'signed': False, 'type_code': 'H', 'invalid': 0x0000},
+    0x0C: {'size': 4, 'type': BASE_TYPE["UINT32Z"], 'signed': False, 'type_code': 'I', 'invalid': 0x00000000},
     0x0D: {'size': 1, 'type': BASE_TYPE["BYTE"], 'signed': False, 'type_code': 'B', 'invalid': 0xFF},
-    0x8E: {'size': 8, 'type': BASE_TYPE["SINT64"], 'signed': True, 'type_code': 'q', 'invalid': 0x7FFFFFFFFFFFFFFF},
-    0x8F: {'size': 8, 'type': BASE_TYPE["UINT64"], 'signed': False, 'type_code': 'Q', 'invalid': 0xFFFFFFFFFFFFFFFF},
-    0x90: {'size': 8, 'type': BASE_TYPE["UINT64Z"], 'signed': False, 'type_code': 'L', 'invalid': 0x0000000000000000},
+    0x0E: {'size': 8, 'type': BASE_TYPE["SINT64"], 'signed': True, 'type_code': 'q', 'invalid': 0x7FFFFFFFFFFFFFFF},
+    0x0F: {'size': 8, 'type': BASE_TYPE["UINT64"], 'signed': False, 'type_code': 'Q', 'invalid': 0xFFFFFFFFFFFFFFFF},
+    0x10: {'size': 8, 'type': BASE_TYPE["UINT64Z"], 'signed': False, 'type_code': 'L', 'invalid': 0x0000000000000000},
 }
 
+BASE_TYPE_MASK = 0x1F
+
 NUMERIC_FIELD_TYPES = [
     "sint8",
     "uint8",

diff --git a/garmin_fit_sdk/hr_mesg_utils.py b/garmin_fit_sdk/hr_mesg_utils.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/garmin_fit_sdk/profile.py b/garmin_fit_sdk/profile.py
@@ -5,15 +5,15 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 
 Profile = {
     'version': {
         'major': 21,
-        'minor': 178,
+        'minor': 188,
         'patch': 0,
         'type': "Release"
     },
@@ -4473,7 +4473,7 @@
 			'sub_fields': []
             },
         253: {
-            'num': 253, # Sesson end time.
+            'num': 253,
             'name': "timestamp",
             'type': "date_time",
             'array': "false",
@@ -6724,7 +6724,7 @@
 			'sub_fields': []
             },
         253: {
-            'num': 253, # Lap end time.
+            'num': 253,
             'name': "timestamp",
             'type': "date_time",
             'array': "false",
@@ -14806,7 +14806,7 @@
 			'sub_fields': []
             },
         253: {
-            'num': 253, # Lap end time.
+            'num': 253,
             'name': "timestamp",
             'type': "date_time",
             'array': "false",
@@ -23405,6 +23405,7 @@
         '4446': 'hrm_fit',
         '4472': 'marq_gen2_commander',
         '4477': 'lily_athlete', # aka the Lily 2 Active
+        '4525': 'rally_x10', # Rally 110/210
         '4532': 'fenix8_solar',
         '4533': 'fenix8_solar_large',
         '4534': 'fenix8_small',
@@ -23420,13 +23421,22 @@
         '4603': 'venu_x1',
         '4606': 'hrm_200',
         '4625': 'vivoactive6',
+        '4631': 'fenix8_pro',
+        '4633': 'edge_550',
+        '4634': 'edge_850',
+        '4643': 'venu4',
+        '4644': 'venu4s',
         '4647': 'approachS44',
         '4655': 'edge_mtb',
         '4656': 'approachS50',
         '4666': 'fenix_e',
+        '4745': 'bounce2',
         '4759': 'instinct3_solar_50mm',
         '4775': 'tactix8_amoled',
         '4776': 'tactix8_solar',
+        '4879': 'd2_mach2',
+        '4678': 'instinct_crossover_amoled',
+        '4944': 'd2_air_x15',
         '10007': 'sdm4', # SDM4 footpod
         '10014': 'edge_remote',
         '20533': 'tacx_training_app_win',

diff --git a/garmin_fit_sdk/stream.py b/garmin_fit_sdk/stream.py
@@ -11,8 +11,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/garmin_fit_sdk/util.py b/garmin_fit_sdk/util.py
@@ -7,8 +7,8 @@
 # Transfer (FIT) Protocol License.
 ###########################################################################################
 # ****WARNING****  This file is auto-generated!  Do NOT edit this file.
-# Profile Version = 21.178.0Release
-# Tag = production/release/21.178.0-0-g3bea629
+# Profile Version = 21.188.0Release
+# Tag = production/release/21.188.0-0-g55050f8
 ############################################################################################
 
 

diff --git a/pyproject.toml b/pyproject.toml
@@ -1,8 +1,37 @@
 [build-system]
-requires = [
-    "setuptools >= 48",
-    "setuptools_scm[toml] >= 4, <6",
-    "setuptools_scm_git_archive",
-    "wheel >= 0.29.0",
+requires = ["setuptools >= 64"]
+build-backend = "setuptools.build_meta"
+
+[project]
+version = "21.188.0"
+name = "garmin-fit-sdk"
+description = "Garmin FIT Python SDK"
+authors = [{ name = "Garmin International, Inc." }]
+readme = { file = "README.md", content-type = "text/markdown" }
+license = { file = "LICENSE" }
+keywords = ["garmin", "fit sdk", "fit"]
+requires-python = ">=3.6"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Natural Language :: English",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3 :: Only",
+    "Operating System :: OS Independent",
 ]
-build-backend = 'setuptools.build_meta'
+urls = { "Homepage" = "https://github.com/garmin/fit-python-sdk" }
+dependencies = []
+
+[project.optional-dependencies]
+dev = ["pytest~=7.0.1", "pytest-cov~=3.0.0", "pytest-mock~=3.6.1"]
+
+[tool.setuptools]
+include-package-data = true
+
+[tool.setuptools.packages.find]
+exclude = [".gitignore", ".vscode*", ".pytest_cache*", ".test.py"]
diff --git a/tests/__init__.py b/tests/__init__.py
@@ -8,4 +8,4 @@
 
 # __init__.py for the fit sdk tests module
 
-__version__ = '21.178.0'
+__version__ = '21.188.0'
diff --git a/tests/data.py b/tests/data.py
@@ -174,6 +174,16 @@ class Data:
         0x5C, 0xF2, 0x6D, 0x00, 0x36, 0xEE, 0x80, 0x78, 0x3B
     ])
 
+    fit_file_short_multibyte_dev_data = bytearray([
+        0x0E, 0x20, 0xB9, 0x52, 0x3F, 0x00, 0x00, 0x00, 0x2E, 0x46, 0x49, 0x54,
+        0xED, 0x8A, 0x40, 0x00, 0x01, 0x00, 0xCF, 0x01, 0x03, 0x01, 0x02, 0x00,
+        0x00, 0x40, 0x00, 0x01, 0x00, 0xCE, 0x05, 0x00, 0x01, 0x02, 0x01, 0x01,
+        0x02, 0x02, 0x01, 0x02, 0x08, 0x07, 0x07, 0x0E, 0x02, 0x84, 0x00, 0x00,
+        0x00, 0x84, 0x70, 0x6F, 0x69, 0x6E, 0x74, 0x73, 0x00, 0x00, 0x12, 0x60,
+        0x00, 0x01, 0x00, 0x12, 0x01, 0xFE, 0x02, 0x84, 0x01, 0x00, 0x02, 0x00,
+        0x00, 0x00, 0x00, 0x04, 0xD2, 0x97, 0x59
+    ])
+
     fit_file_monitoring = bytearray([
         0x0E, 0x10, 0x28, 0x23, 0x37, 0x00, 0x00, 0x00, 0x2E, 0x46, 0x49, 0x54,
         0x2C, 0xC6, 0x41, 0x00, 0x01, 0x00, 0x37, 0x03, 0xFD, 0x04, 0x86, 0x18,
Original file line number	Diff line number	Diff line change
Expand Up		@@ -8,4 +8,4 @@

		# __init__.py for the fit sdk tests module

		__version__ = '21.178.0'
		__version__ = '21.188.0'