diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f2a55c8..78f4a67c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 Change Log
 
+v4.1.2
+---
+* Fix `transformObjectKeys` performance in some edge-cases
+* Update `class-validator` version. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/issues/1324
+* Update other dependencies
+
 v4.1.1
 ---
 * Update supported Node.js versions up to `node@22`. Fixes https://github.com/javascript-obfuscator/javascript-obfuscator/pull/1100
diff --git a/package.json b/package.json
index c7d7dc0c..666183d5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "javascript-obfuscator",
-  "version": "4.1.1",
+  "version": "4.1.2",
   "description": "JavaScript obfuscator",
   "keywords": [
     "obfuscator",
@@ -27,7 +27,7 @@
     "assert": "2.1.0",
     "chalk": "4.1.2",
     "chance": "1.1.13",
-    "class-validator": "0.14.2",
+    "class-validator": "0.14.3",
     "commander": "12.1.0",
     "eslint-scope": "8.4.0",
     "eslint-visitor-keys": "4.2.1",
diff --git a/src/node-transformers/converting-transformers/ObjectExpressionKeysTransformer.ts b/src/node-transformers/converting-transformers/ObjectExpressionKeysTransformer.ts
index 312d5ee6..20efc1d3 100644
--- a/src/node-transformers/converting-transformers/ObjectExpressionKeysTransformer.ts
+++ b/src/node-transformers/converting-transformers/ObjectExpressionKeysTransformer.ts
@@ -102,7 +102,7 @@ export class ObjectExpressionKeysTransformer extends AbstractNodeTransformer {
         objectExpressionNode: ESTree.ObjectExpression,
         objectExpressionHostNode: ESTree.Node,
     ): boolean {
-        const identifierNamesSet: string[] = [];
+        const identifierNamesSet: Set<string> = new Set();
 
         let isReferencedIdentifierName: boolean = false;
         let isCurrentNode: boolean = false;
@@ -119,17 +119,19 @@ export class ObjectExpressionKeysTransformer extends AbstractNodeTransformer {
                 }
 
                 if (!isCurrentNode) {
-                    identifierNamesSet.push(ObjectExpressionKeysTransformer.getReferencedIdentifierName(node));
+                    identifierNamesSet.add(ObjectExpressionKeysTransformer.getReferencedIdentifierName(node));
 
                     return;
                 }
 
-                const hasReferencedIdentifierName: boolean = identifierNamesSet.includes(
+                const hasReferencedIdentifierName: boolean = identifierNamesSet.has(
                     ObjectExpressionKeysTransformer.getReferencedIdentifierName(node)
                 );
 
                 if (hasReferencedIdentifierName) {
                     isReferencedIdentifierName = true;
+
+                    return estraverse.VisitorOption.Break;
                 }
             },
             leave: (node: ESTree.Node): void | estraverse.VisitorOption => {
diff --git a/src/node-transformers/converting-transformers/object-expression-extractors/BasePropertiesExtractor.ts b/src/node-transformers/converting-transformers/object-expression-extractors/BasePropertiesExtractor.ts
index 49575ddf..ee45587a 100644
--- a/src/node-transformers/converting-transformers/object-expression-extractors/BasePropertiesExtractor.ts
+++ b/src/node-transformers/converting-transformers/object-expression-extractors/BasePropertiesExtractor.ts
@@ -128,7 +128,11 @@ export class BasePropertiesExtractor implements IObjectExpressionExtractor {
 
         this.filterExtractedObjectExpressionProperties(objectExpressionNode, removablePropertyIds);
         NodeAppender.insertAfter(hostNodeWithStatements, expressionStatements, hostStatement);
-        NodeUtils.parentizeAst(hostNodeWithStatements);
+        // Only parentize the newly inserted statements, not the entire scope
+        expressionStatements.forEach((statement) => {
+            NodeUtils.parentizeAst(statement);
+            NodeUtils.parentizeNode(statement, hostNodeWithStatements);
+        });
 
         return {
             nodeToReplace: objectExpressionNode,
diff --git a/yarn.lock b/yarn.lock
index 59a16797..d2fddd2f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -749,10 +749,10 @@
   resolved "https://registry.yarnpkg.com/@types/string-template/-/string-template-1.0.7.tgz#593fd97fd7515ae6eba80a142738daadc961c895"
   integrity sha512-sQWEsTbB0pKCc1eAC9mwTKftyXuWfSZVfDTskhlQLE/xTtuevqOlFG/t4Djf/VFbRdt7PROaovoqpWfZWhMRfA==
 
-"@types/validator@^13.11.8":
-  version "13.15.4"
-  resolved "https://registry.yarnpkg.com/@types/validator/-/validator-13.15.4.tgz#38a97ae54747416f745afdfc678f041713082635"
-  integrity sha512-LSFfpSnJJY9wbC0LQxgvfb+ynbHftFo0tMsFOl/J4wexLnYMmDSPaj2ZyDv3TkfL1UePxPrxOWJfbiRS8mQv7A==
+"@types/validator@^13.15.3":
+  version "13.15.10"
+  resolved "https://registry.yarnpkg.com/@types/validator/-/validator-13.15.10.tgz#742b77ec34d58554b94a76a14cef30d59e3c16b9"
+  integrity sha512-T8L6i7wCuyoK8A/ZeLYt1+q0ty3Zb9+qbSSvrIVitzT3YjZqkTZ40IbRsPanlB4h1QB3JVL1SYCdR6ngtFYcuA==
 
 "@types/webpack-env@1.18.8":
   version "1.18.8"
@@ -1520,14 +1520,14 @@ ci-info@^4.0.0:
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-4.3.1.tgz#355ad571920810b5623e11d40232f443f16f1daa"
   integrity sha512-Wdy2Igu8OcBpI2pZePZ5oWjPC38tmDVx5WKUXKwlLYkA0ozo85sLsLvkBbBn/sZaSCMFOGZJ14fvW9t5/d7kdA==
 
-class-validator@0.14.2:
-  version "0.14.2"
-  resolved "https://registry.yarnpkg.com/class-validator/-/class-validator-0.14.2.tgz#a3de95edd26b703e89c151a2023d3c115030340d"
-  integrity sha512-3kMVRF2io8N8pY1IFIXlho9r8IPUUIfHe2hYVtiebvAzU2XeQFXTv+XI4WX+TnXmtwXMDcjngcpkiPM0O9PvLw==
+class-validator@0.14.3:
+  version "0.14.3"
+  resolved "https://registry.yarnpkg.com/class-validator/-/class-validator-0.14.3.tgz#834a4caafa8359aed73d7708badb4cf271be50fe"
+  integrity sha512-rXXekcjofVN1LTOSw+u4u9WXVEUvNBVjORW154q/IdmYWy1nMbOU9aNtZB0t8m+FJQ9q91jlr2f9CwwUFdFMRA==
   dependencies:
-    "@types/validator" "^13.11.8"
+    "@types/validator" "^13.15.3"
     libphonenumber-js "^1.11.1"
-    validator "^13.9.0"
+    validator "^13.15.20"
 
 clean-regexp@^1.0.0:
   version "1.0.0"
@@ -5333,10 +5333,10 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-validator@^13.9.0:
-  version "13.15.20"
-  resolved "https://registry.yarnpkg.com/validator/-/validator-13.15.20.tgz#054e9238109538a1bf46ae3e1290845a64fa2186"
-  integrity sha512-KxPOq3V2LmfQPP4eqf3Mq/zrT0Dqp2Vmx2Bn285LwVahLc+CsxOM0crBHczm8ijlcjZ0Q5Xd6LW3z3odTPnlrw==
+validator@^13.15.20:
+  version "13.15.23"
+  resolved "https://registry.yarnpkg.com/validator/-/validator-13.15.23.tgz#59a874f84e4594588e3409ab1edbe64e96d0c62d"
+  integrity sha512-4yoz1kEWqUjzi5zsPbAS/903QXSYp0UOtHsPpp7p9rHAw/W+dkInskAE386Fat3oKRROwO98d9ZB0G4cObgUyw==
 
 watchpack@^2.4.4:
   version "2.4.4"