diff --git a/package.json b/package.json
index 9d9dff9..efcf74b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@phuire/strx",
-  "version": "0.0.52",
+  "version": "0.0.53",
   "description": "Unified Turing Machine",
   "main": "dist/index.js",
   "module": "dist/index.mjs",
diff --git a/src/model/concept.ts b/src/model/concept.ts
index 88220df..ad27c7e 100644
--- a/src/model/concept.ts
+++ b/src/model/concept.ts
@@ -196,7 +196,7 @@ function unify(base: Concept, target: Concept): Concept {
  * Will document the usage of such after UI concept release.
  */
 export function unifyConcepts(
-  concepts: Concepts,
+  concepts: Concept[],
   emergentConcept: Concept
 ): Concept {
   let newConcept = createConcept('', {});