diff --git a/index/li/libreadline/libreadline-external.toml b/index/li/libreadline/libreadline-external.toml
index ea4ac7cd..18719d28 100644
--- a/index/li/libreadline/libreadline-external.toml
+++ b/index/li/libreadline/libreadline-external.toml
@@ -9,3 +9,5 @@ kind = "system"
 [external.origin."case(distribution)"]
 "debian|ubuntu" = ["libreadline-dev"]
 msys2 = ["mingw-w64-x86_64-readline"]
+"homebrew|macports" = ["readline"]
+"centos|fedora" = ["readline-devel"]