diff --git a/intro_stdpopsim_SMBE2024/Intro_stdpopsim.ipynb b/intro_stdpopsim_SMBE2024/Intro_stdpopsim.ipynb
index 6aff1e7..359fcbd 100644
--- a/intro_stdpopsim_SMBE2024/Intro_stdpopsim.ipynb
+++ b/intro_stdpopsim_SMBE2024/Intro_stdpopsim.ipynb
@@ -370,6 +370,21 @@
     "ts = engine.simulate(model, contig, samples, slim_scaling_factor=100, seed=1)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "We're getting a lot of warnings. Don't ignore these!\n",
+    "At least, don't ignore them until you figure out why they are happening.\n",
+    "Some of these are because we're using approximations to make the simulations go extra fast;\n",
+    "the warnings are telling us that the approximations are approximate - so: beware!\n",
+    "If you're just using these for development (like us) then no worries.\n",
+    "But, if you use them for production, make sure to evaluate whether the approximations\n",
+    "are affecting your results!\n",
+    "\n",
+    "This will turn off these warnings below:"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1378,7 +1393,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.14"
+   "version": "3.12.4"
   }
  },
  "nbformat": 4,