diff --git a/README.md b/README.md
index 165a2b39..9d45c2bc 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,11 @@
 # Python Data Science Handbook
 
-[![Binder](https://mybinder.org/badge.svg)](https://mybinder.org/v2/gh/jakevdp/PythonDataScienceHandbook/master?filepath=notebooks%2FIndex.ipynb)
-[![Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/jakevdp/PythonDataScienceHandbook/blob/master/notebooks/Index.ipynb)
+---
+
+> [!WARNING]
+> This repository installs updated packages, because the original specs do not work any more. So, some examples might no longer work!
+
+---
 
 This repository contains the entire [Python Data Science Handbook](http://shop.oreilly.com/product/0636920034919.do), in the form of (free!) Jupyter notebooks.
 
diff --git a/environment.yml b/environment.yml
index 247ddfcc..c47b0826 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,5 +3,17 @@ channels:
   - conda-forge
 dependencies:
   - python=3.5
-  - pip:
-    - -r requirements.txt
\ No newline at end of file
+  - numpy<2
+  - libgfortran=3
+  - matplotlib
+  - pandas<1
+  - scikit-learn<1
+  - scikit-image<1
+  - scipy<1
+  - pillow
+  - seaborn<1
+  - line_profiler
+  - memory_profiler
+  - numexpr
+  - pandas-datareader
+  - netcdf4
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index fe9cdd91..00000000
--- a/requirements.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-numpy==1.11.1
-pandas==0.18.1
-scipy==0.17.1
-scikit-learn==0.17.1
-scikit-image==0.12.3
-pillow==3.4.2
-matplotlib==1.5.1
-seaborn==0.7.0
-jupyter
-notebook
-line_profiler
-memory_profiler
-numexpr
-pandas-datareader
-netcdf4