diff --git a/src/utils/queryParser.ts b/src/utils/queryParser.ts
index 76549d5..f2883e7 100644
--- a/src/utils/queryParser.ts
+++ b/src/utils/queryParser.ts
@@ -10,6 +10,11 @@ type ParsedQuery = Array<
 function convertValue(value: any) {
   if (mongoose.Types.ObjectId.isValid(value)) {
     return mongoose.Types.ObjectId.createFromHexString(value);
+  } else if (
+    !isNaN(parseInt(value)) &&
+    parseInt(value).toString().length == value.toString().length
+  ) {
+    return parseInt(value);
   } else if (!isNaN(Date.parse(value))) {
     return new Date(value);
   } else {
@@ -58,8 +63,7 @@ export function parse(query: string, validFields: Array<string>): ParsedQuery {
         if (i == query.length - 1) token += char;
 
         value = token;
-        if (validFields.includes(field))
-          result.push({ [field]: { [op]: convertValue(value) } });
+        result.push({ [field]: { [op]: convertValue(value) } });
 
         token = "";
         field = "";
@@ -82,10 +86,9 @@ export function parse(query: string, validFields: Array<string>): ParsedQuery {
 
       if (char === "]") {
         valueArr.push(token);
-        if (validFields.includes(field))
-          result.push({
-            [field]: { [op === "$eq" ? "$in" : "$nin"]: valueArr },
-          });
+        result.push({
+          [field]: { [op === "$eq" ? "$in" : "$nin"]: valueArr },
+        });
 
         token = "";
         field = "";