diff --git a/glicid/packages/algebra.scm b/glicid/packages/algebra.scm
index c996266..6625807 100644
--- a/glicid/packages/algebra.scm
+++ b/glicid/packages/algebra.scm
@@ -2,6 +2,7 @@
   #:use-module (guix packages)
   #:use-module (guix utils)
   #:use-module (gnu packages algebra)
+  #:use-module (gnu packages commencement)
 )
 
 ;;;;;;;;