diff --git a/.github/workflows/Fortran.yml b/.github/workflows/Fortran.yml
index 15a133f95..85fbc5b9c 100644
--- a/.github/workflows/Fortran.yml
+++ b/.github/workflows/Fortran.yml
@@ -102,7 +102,7 @@ jobs:
         run: |
           apt-get update --allow-insecure-repositories
           apt-get install --allow-unauthenticated -y \
-          cmake
+          cmake autoconf
           printenv >> $GITHUB_ENV
 
       - name: PETSc - Cache download