diff --git a/arduino/package_arduinosilabs_index.json b/arduino/package_arduinosilabs_index.json
index 01e6e17..a266a1d 100644
--- a/arduino/package_arduinosilabs_index.json
+++ b/arduino/package_arduinosilabs_index.json
@@ -97,6 +97,59 @@
                     },
                     "size": 320160894,
                     "checksum": "SHA-256:75b9690f628cd9334c055ddb02ad559236732f3997ef59c87e833698830f19c7"
+                },
+                {
+                    "category": "Silicon Labs",
+                    "name": "Silicon Labs",
+                    "url": "https://github.com/SiliconLabs/arduino/releases/download/2.1.0/silabs_arduino_core-2.1.0.zst",
+                    "version": "2.1.0",
+                    "architecture": "silabs",
+                    "archiveFileName": "silabs_arduino_core-2.1.0.zst",
+                    "boards": [
+                        {
+                            "name": "Arduino Nano Matter"
+                        },
+                        {
+                            "name": "SparkFun Thing Plus Matter"
+                        },
+                        {
+                            "name": "xG24 Explorer Kit"
+                        },
+                        {
+                            "name": "xG24 Dev Kit"
+                        },
+                        {
+                            "name": "xG27 Dev Kit"
+                        },
+                        {
+                            "name": "BGM220 Explorer Kit"
+                        },
+                        {
+                            "name": "Ezurio Lyra 24P 20dBm Dev Kit"
+                        }
+                    ],
+                    "toolsDependencies": [
+                        {
+                            "packager": "SiliconLabs",
+                            "version": "12.2.rel1",
+                            "name": "gcc-arm-none-eabi"
+                        },
+                        {
+                            "packager": "SiliconLabs",
+                            "version": "1.16.4",
+                            "name": "simplicitycommander"
+                        },
+                        {
+                            "packager": "SiliconLabs",
+                            "version": "0.12.0-arduino1-static",
+                            "name": "openocd"
+                        }
+                    ],
+                    "help": {
+                        "online": "https://github.com/SiliconLabs/arduino"
+                    },
+                    "size": 370773700,
+                    "checksum": "SHA-256:138248fe50e0066144fd660c258479abfd0518b048943dfbd9920f85c26f3aca"
                 }
             ],
             "tools": [