diff --git a/contrib/guix/manifest.scm b/contrib/guix/manifest.scm
index 927aa30f077..e593d8d750c 100644
--- a/contrib/guix/manifest.scm
+++ b/contrib/guix/manifest.scm
@@ -22,9 +22,11 @@
              ((gnu packages python-xyz) #:select (python-pydantic-2))
              ((gnu packages tls) #:select (openssl))
              ((gnu packages version-control) #:select (git-minimal))
+             (guix build-system cmake)
              (guix build-system python)
              (guix build-system pyproject)
              (guix build-system trivial)
+             (guix download)
              (guix gexp)
              (guix git-download)
              ((guix licenses) #:prefix license:)