diff --git a/build/pkgs/libsemigroups/dependencies b/build/pkgs/libsemigroups/dependencies
index 4f00de20375..54c5a1a983c 100644
--- a/build/pkgs/libsemigroups/dependencies
+++ b/build/pkgs/libsemigroups/dependencies
@@ -1,4 +1,3 @@
-# no dependencies
-
+pkgconf
 ----------
 All lines of this file are ignored except the first.