diff --git a/model_regresji_liniowej.ipynb b/model_regresji_liniowej.ipynb
index 6a744f2..e3d8e78 100644
--- a/model_regresji_liniowej.ipynb
+++ b/model_regresji_liniowej.ipynb
@@ -10,6 +10,7 @@
     "from statistics import mean,median\n",
     "import re\n",
     "import numpy as np\n",
+    "from sklearn.metrics import mean_absolute_error\n",
     " "
    ]
   },