diff --git a/SiameseBERT_SemanticSearch.ipynb b/SiameseBERT_SemanticSearch.ipynb
index e3fa478..67a1ddc 100644
--- a/SiameseBERT_SemanticSearch.ipynb
+++ b/SiameseBERT_SemanticSearch.ipynb
@@ -185,6 +185,7 @@
         },
         "outputId": "be7fcea8-15ac-4ab6-ebdf-55e507a7d496"
       },
+      "import numpy\n",
       "source": [
         "# A corpus is a list with documents split by sentences.\n",
         "\n",
@@ -482,4 +483,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}