diff --git a/data/schemas/keyboard.jsonschema b/data/schemas/keyboard.jsonschema
index 0b3d6f393dc..3dba21bc0f9 100644
--- a/data/schemas/keyboard.jsonschema
+++ b/data/schemas/keyboard.jsonschema
@@ -25,7 +25,7 @@
         },
         "processor": {
             "type": "string",
-            "enum": ["MK20DX128", "MK20DX256", "MKL26Z64", "STM32F042", "STM32F072", "STM32F103", "STM32F303", "STM32F401", "STM32F411", "at90usb1286", "at90usb646", "atmega16u2", "atmega328p", "atmega32a", "atmega32u2", "atmega32u4", "attiny85", "cortex-m4", "unknown"]
+            "enum": ["cortex-m0", "cortex-m0plus", "cortex-m3", "cortex-m4", "MKL26Z64", "MK20DX128", "MK20DX256", "STM32F042", "STM32F072", "STM32F103", "STM32F303", "STM32F401", "STM32F411", "atmega16u2", "atmega32u2", "atmega16u4", "atmega32u4", "at90usb646", "at90usb647", "at90usb1286", "at90usb1287", "atmega32a", "atmega328p", "atmega328", "attiny85", "unknown"]
         },
         "board": {
             "type": "string",