diff --git a/materials/mamba.md b/materials/mamba.md
index 3eadde8..0583497 100644
--- a/materials/mamba.md
+++ b/materials/mamba.md
@@ -15,7 +15,7 @@ To install _Mamba_, run the following commands from the terminal (this will inst
 curl -L -O "https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh"
 /bin/bash Miniforge3-$(uname)-$(uname -m).sh -b -p $HOME/miniforge3
 rm Miniforge3-$(uname)-$(uname -m).sh
-$HOME/miniforge3/bin/mamba init
+$HOME/miniforge3/bin/mamba init --all
 ```
 
 Restart your terminal.
@@ -37,7 +37,7 @@ To install _Mamba_, run the following commands from the terminal (this will inst
 wget "https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh"
 bash Miniforge3-$(uname)-$(uname -m).sh -b -p $HOME/miniforge3
 rm Miniforge3-$(uname)-$(uname -m).sh
-$HOME/miniforge3/bin/mamba init
+$HOME/miniforge3/bin/mamba init --all
 ```
 
 Restart your terminal.