diff --git a/scripts/spack/configs/linux_ubuntu_20/spack.yaml b/scripts/spack/configs/linux_ubuntu_20/spack.yaml
index f87c7cf435..299726fd69 100644
--- a/scripts/spack/configs/linux_ubuntu_20/spack.yaml
+++ b/scripts/spack/configs/linux_ubuntu_20/spack.yaml
@@ -1,7 +1,7 @@
 spack:
   compilers::
   - compiler:
-      spec: gcc@9.3.0
+      spec: gcc@9.4.0
       paths:
         cc: /usr/bin/gcc
         cxx: /usr/bin/g++
@@ -116,7 +116,7 @@ spack:
       - spec: cmake@3.20.4
         prefix: /usr
     cppcheck:
-      version: [1.90]
+      version: ['1.90']
       buildable: false
       externals:
       - spec: cppcheck@1.90
diff --git a/src/docs/sphinx/quickstart.rst b/src/docs/sphinx/quickstart.rst
index 325be082c5..f05bfc1177 100644
--- a/src/docs/sphinx/quickstart.rst
+++ b/src/docs/sphinx/quickstart.rst
@@ -143,6 +143,9 @@ in the `Spack docs <https://spack.readthedocs.io/en/latest/configuration.html>`_
 .. note::
    If you do not have a ``spack.yaml`` already, you can leave off that command line option from ``uberenv`` and
    Spack will generate a new one for you. Uberenv will copy it where you ran your uberenv command for future use.
+.. note::
+   A newer vesion of cmake (>=3.20) and llvm (>=14) may be required.
+
 
 Some helpful uberenv options include :