diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index 719401d69a3464e9f22f2fdb306d964682b6e53d..36df9fad0cd41817b41fa2e93ae24cf87f5110db 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -206,6 +206,8 @@ (define-public ghmm
       (arguments
        `(#:imported-modules (,@%gnu-build-system-modules
                              (guix build python-build-system))
+         #:modules          ((guix build python-build-system)
+                             ,@%gnu-build-system-modules)
          #:phases
          (modify-phases %standard-phases
            (add-after 'unpack 'enter-dir