diff --git a/tp/derivees.ipynb b/tp/derivees.ipynb
index b6bbda95a036519e2c46c5449e11acd2941e6c0d..d21669a40919135ba1297f83ee83f54668cab73e 100644
--- a/tp/derivees.ipynb
+++ b/tp/derivees.ipynb
@@ -48,7 +48,6 @@
     "\n",
     "# load packages\n",
     "using DualNumbers\n",
-    "using DifferentialEquations\n",
     "using ForwardDiff\n",
     "using LinearAlgebra\n",
     "using Plots\n",