also need gfortran

diff --git a/deal.II-in-Spack.md b/deal.II-in-Spack.md
index 08636c2..ca16ded 100644 (file)
--- a/deal.II-in-Spack.md
+++ b/deal.II-in-Spack.md
@@ -44,9 +44,9 @@ export PATH="$SPACK_ROOT/bin:$PATH"
 ```
 `SPACK_ROOT` is the destination where you want Spack to be installed (i.e. `$HOME/spack`).
 
-Make sure that `python`, `curl` and `git` are installed, i.e. by running:
+Make sure that `python`, `curl`, `git` and `gfortran` are installed, i.e. by running:
 ```
-sudo apt install python git curl
+sudo apt install python git curl gfortran
 ```
 
 Now clone Spack