diff --git a/data/schemas/definitions.jsonschema b/data/schemas/definitions.jsonschema
index b9c64a55ec4..441e6395cf6 100644
--- a/data/schemas/definitions.jsonschema
+++ b/data/schemas/definitions.jsonschema
@@ -29,6 +29,10 @@
         "minLength": 1,
         "maxLength": 250
     },
+    "snake_case": {
+        "type": "string",
+        "pattern": "^[a-z][a-z0-9_]*$"
+    },
     "layout_macro": {
         "oneOf": [
             {
diff --git a/data/schemas/keyboard.jsonschema b/data/schemas/keyboard.jsonschema
index 0f0576b1c3c..1d9b7e7e6a3 100644
--- a/data/schemas/keyboard.jsonschema
+++ b/data/schemas/keyboard.jsonschema
@@ -268,7 +268,11 @@
                 "enabled": {"type": "boolean"}
             }
         },
-        "features": {"$ref": "qmk.definitions.v1#/boolean_array"},
+        "features": {
+            "$ref": "qmk.definitions.v1#/boolean_array",
+            "propertyNames": { "$ref": "qmk.definitions.v1#/snake_case" }
+
+        },
         "indicators": {
             "type": "object",
             "properties": {
@@ -382,6 +386,7 @@
             "properties": {
                 "animations": {
                     "type": "object",
+                    "propertyNames": { "$ref": "qmk.definitions.v1#/snake_case" }
                     "additionalProperties": {
                         "type": "boolean"
                     }
@@ -431,6 +436,7 @@
             "properties": {
                 "animations": {
                     "type": "object",
+                    "propertyNames": { "$ref": "qmk.definitions.v1#/snake_case" }
                     "additionalProperties": {
                         "type": "boolean"
                     }
@@ -483,6 +489,7 @@
             "properties": {
                 "animations": {
                     "type": "object",
+                    "propertyNames": { "$ref": "qmk.definitions.v1#/snake_case" }
                     "additionalProperties": {
                         "type": "boolean"
                     }