diff --git a/platformio/boards/ststm32.json b/platformio/boards/ststm32.json
index 46037168..1366a4e4 100644
--- a/platformio/boards/ststm32.json
+++ b/platformio/boards/ststm32.json
@@ -586,6 +586,22 @@
         "url": "https://developer.mbed.org/platforms/ST-Nucleo-L073RZ/",
         "vendor": "ST"
     },
+    "nucleo_l031k6": {
+        "build": {
+            "f_cpu": "32000000L",
+            "cpu": "cortex-m0plus",
+            "mcu": "stm32l031k6t6"
+        },
+        "frameworks": ["mbed"],
+        "name": "ST Nucleo L031K6",
+        "platform": "ststm32",
+        "upload": {
+            "maximum_ram_size": 8192,
+            "maximum_size": 32768
+        },
+        "url": "https://developer.mbed.org/platforms/ST-Nucleo-L031K6/",
+        "vendor": "ST"
+    },
     "seeedArchMax": {
         "build": {
             "f_cpu": "168000000L",