diff --git a/prowler/lib/mutelist/models.py b/prowler/lib/mutelist/models.py
deleted file mode 100644
index e601f17c873..00000000000
--- a/prowler/lib/mutelist/models.py
+++ /dev/null
@@ -1,24 +0,0 @@
-from schema import Optional, Schema
-
-mutelist_schema = Schema(
-    {
-        "Accounts": {
-            str: {
-                "Checks": {
-                    str: {
-                        "Regions": list,
-                        "Resources": list,
-                        Optional("Tags"): list,
-                        Optional("Exceptions"): {
-                            Optional("Accounts"): list,
-                            Optional("Regions"): list,
-                            Optional("Resources"): list,
-                            Optional("Tags"): list,
-                        },
-                        Optional("Description"): str,
-                    }
-                }
-            }
-        }
-    }
-)
diff --git a/prowler/lib/mutelist/mutelist.py b/prowler/lib/mutelist/mutelist.py
index abc4065e01c..68d19ce5675 100644
--- a/prowler/lib/mutelist/mutelist.py
+++ b/prowler/lib/mutelist/mutelist.py
@@ -2,12 +2,86 @@
 from abc import ABC, abstractmethod
 
 import yaml
+from jsonschema import validate
 
 from prowler.lib.logger import logger
-from prowler.lib.mutelist.models import mutelist_schema
 from prowler.lib.outputs.common import Status
 from prowler.lib.outputs.utils import unroll_dict, unroll_tags
 
+mutelist_schema = {
+    "type": "object",
+    "properties": {
+        "Accounts": {
+            "type": "object",
+            "patternProperties": {
+                ".*": {  # Match any account
+                    "type": "object",
+                    "properties": {
+                        "Checks": {
+                            "type": "object",
+                            "patternProperties": {
+                                ".*": {  # Match any check
+                                    "type": "object",
+                                    "properties": {
+                                        "Regions": {
+                                            "type": "array",
+                                            "items": {"type": "string"},
+                                        },
+                                        "Resources": {
+                                            "type": "array",
+                                            "items": {"type": "string"},
+                                        },
+                                        "Tags": {  # Optional field
+                                            "type": "array",
+                                            "items": {"type": "string"},
+                                        },
+                                        "Exceptions": {  # Optional field
+                                            "type": "object",
+                                            "properties": {
+                                                "Accounts": {  # Optional field
+                                                    "type": "array",
+                                                    "items": {"type": "string"},
+                                                },
+                                                "Regions": {  # Optional field
+                                                    "type": "array",
+                                                    "items": {"type": "string"},
+                                                },
+                                                "Resources": {  # Optional field
+                                                    "type": "array",
+                                                    "items": {"type": "string"},
+                                                },
+                                                "Tags": {  # Optional field
+                                                    "type": "array",
+                                                    "items": {"type": "string"},
+                                                },
+                                            },
+                                            "additionalProperties": False,
+                                        },
+                                        "Description": {  # Optional field
+                                            "type": "string",
+                                        },
+                                    },
+                                    "required": [
+                                        "Regions",
+                                        "Resources",
+                                    ],  # Mandatory within a check
+                                    "additionalProperties": False,
+                                }
+                            },
+                            "additionalProperties": False,
+                        },
+                    },
+                    "required": ["Checks"],  # Mandatory within an account
+                    "additionalProperties": False,
+                }
+            },
+            "additionalProperties": False,
+        }
+    },
+    "required": ["Accounts"],  # Accounts is mandatory at the root level
+    "additionalProperties": False,
+}
+
 
 class Mutelist(ABC):
     """
@@ -70,7 +144,7 @@ def get_mutelist_file_from_local_file(self, mutelist_path: str):
 
     def validate_mutelist(self) -> bool:
         try:
-            self._mutelist = mutelist_schema.validate(self._mutelist)
+            validate(self._mutelist, schema=mutelist_schema)
             return True
         except Exception as error:
             logger.error(