diff --git a/cmd/v/help/build-c.txt b/cmd/v/help/build-c.txt
index 214e9da20c..5ef29f78f7 100644
--- a/cmd/v/help/build-c.txt
+++ b/cmd/v/help/build-c.txt
@@ -158,6 +158,9 @@ see also `v help build`.
 
           https://github.com/ivmai/bdwgc
 
+      On Mac OS, it can be installed using homebrew (https://homebrew.sh/) with
+      `brew install libgc`.
+
       Note, `-gc boehm` is complementary to -autofree. The Boehm garbage
       collector is conservative, and it may make your program significantly
       slower if it does many small allocations in a loop. This option