diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6fd677e..2b3b705 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## [1.2.1](https://github.com/SmartOperatingBlock/operating-block-gateway/compare/1.2.0...1.2.1) (2023-06-01)
+
+
+### Bug Fixes
+
+* handle empty json from serial ([5610e3f](https://github.com/SmartOperatingBlock/operating-block-gateway/commit/5610e3fdf0fa2649dbf4ecdad90ed13ea373e421))
+
+
+### Dependency updates
+
+* **deps:** update dependency semantic-release-preconfigured-conventional-commits to v1.1.27 ([044ae80](https://github.com/SmartOperatingBlock/operating-block-gateway/commit/044ae80cc63a3adcddab09bac72db44be4fd7222))
+* **deps:** update dependency semantic-release-preconfigured-conventional-commits to v1.1.30 ([8a3d483](https://github.com/SmartOperatingBlock/operating-block-gateway/commit/8a3d4831403d570f957b6223dbebd11ef251409e))
+
 ## [1.2.0](https://github.com/SmartOperatingBlock/operating-block-gateway/compare/1.1.3...1.2.0) (2023-05-30)
 
 
diff --git a/data/flows.json b/data/flows.json
index cefd745..76aab6b 100644
--- a/data/flows.json
+++ b/data/flows.json
@@ -893,7 +893,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "setSerial",
-        "func": "msg.serial_id = \"/dev/ttyUSB0\"\nmsg.payload = JSON.parse(msg.payload)\nreturn msg;",
+        "func": "msg.serial_id = \"/dev/ttyUSB0\"\nmsg.payload = parseJson(msg.payload)\n\nfunction parseJson(string) {\n    return string === \"\" ? JSON.parse(\"{}\") : JSON.parse(string)\n}\n\nreturn msg;",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -1033,7 +1033,8 @@
         "y": 180,
         "wires": [
             [
-                "ead8458e27835fd5"
+                "ead8458e27835fd5",
+                "df4e2787b740a95d"
             ]
         ]
     },
@@ -1936,8 +1937,8 @@
         "y": 1440,
         "wires": [
             [
-                "ad7cbc939ce76248",
-                "d84f8fb891cfb581"
+                "d84f8fb891cfb581",
+                "ad7cbc939ce76248"
             ]
         ]
     },
@@ -1994,8 +1995,24 @@
         "name": "Success: No content",
         "statusCode": "204",
         "headers": {},
-        "x": 2720,
+        "x": 2780,
         "y": 1500,
         "wires": []
+    },
+    {
+        "id": "df4e2787b740a95d",
+        "type": "debug",
+        "z": "09012e75c72a4968",
+        "name": "debug 1",
+        "active": true,
+        "tosidebar": true,
+        "console": false,
+        "tostatus": false,
+        "complete": "false",
+        "statusVal": "",
+        "statusType": "auto",
+        "x": 360,
+        "y": 140,
+        "wires": []
     }
 ]
diff --git a/package.json b/package.json
index a15eeb6..c6f6510 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "semantic-release-preconfigured-conventional-commits": "1.1.26"
+    "semantic-release-preconfigured-conventional-commits": "1.1.30"
   },
   "engines": {
     "node": "18.16"