diff --git a/notebooks/mag/Mag_FitProfile.ipynb b/notebooks/mag/Mag_FitProfile.ipynb
index 28beb8f..30516a9 100644
--- a/notebooks/mag/Mag_FitProfile.ipynb
+++ b/notebooks/mag/Mag_FitProfile.ipynb
@@ -125,7 +125,7 @@
    ],
    "source": [
     "#Input parameters\n",
-    "fileName = 'http://github.com/geoscixyz/geosci-labs/raw/main/assets/mag/data/Lab2_Tuesday_TA_200922.csv'\n",
+    "fileName = 'http://github.com/geoscixyz/geosci-labs/raw/main/assets/mag/data/350mag2023.csv'\n",
     "data = np.genfromtxt(fileName, skip_header=1, delimiter=',')\n",
     "xyzd = np.c_[np.zeros(data.shape[0]), data[:,0], np.zeros(data.shape[0]), data[:,1]]\n",
     "B = np.r_[60308, 83.8, 25.4]\n",