diff --git a/README.md b/README.md
index d98ddd6..36363c7 100644
--- a/README.md
+++ b/README.md
@@ -21,12 +21,12 @@ Here are static views of the demos and tutorial notebooks:
 
 |Notebook |
 |:-------:|
-|[Mandelbrot set demo](notebooks/mandelbrot/notebook.ipynb) |
-[Julia's secret sauce](notebooks/secret_sauce/notebook.ipynb) |
-[Package composability](notebooks/pkg_composability/notebook.ipynb) |
-[01 - First_steps](notebooks/01_first_steps/notebook.unexecuted.ipynb) |
-[02 - DataFrames](notebooks/02_dataframes/notebook.ipynb) |
-[03 - Machine learning](notebooks/03_machine_learning/notebook.ipynb) |
+|[Mandelbrot set demo](notebooks/mandelbrot/notebook.md) |
+[Julia's secret sauce](notebooks/secret_sauce/notebook.md) |
+[Package composability](notebooks/pkg_composability/notebook.md) |
+[01 - First_steps](notebooks/01_first_steps/notebook.unexecuted.md) |
+[02 - DataFrames](notebooks/02_dataframes/notebook.md) |
+[03 - Machine learning](notebooks/03_machine_learning/notebook.md) |
 
 
 Some random resources for Julia newcomers: