diff --git a/projects/amber-lang.com/package.yml b/projects/amber-lang.com/package.yml
index 177a712a..d1f58489 100644
--- a/projects/amber-lang.com/package.yml
+++ b/projects/amber-lang.com/package.yml
@@ -14,7 +14,18 @@ versions:
   strip: /-alpha/ # until there's a stable release
 
 companions:
+  # complex math
   gnu.org/bc: 1
+  # string functions in `std`
+  gnu.org/sed: 4
+  # tr for `std:lower()`, `std:upper()`
+  gnu.org/coreutils: 9
+  # awk for `std:sum()`
+  gnu.org/gawk: 5
+  # this should be necessary, but compiler.rs hardcodes the
+  # path to /bin/bash
+  # https://github.com/Ph0enixKM/Amber/issues/109
+  # gnu.org/bash: 5
 
 build:
   dependencies: