diff --git a/Formula/portable-ruby.rb b/Formula/portable-ruby.rb
index ac021bd..dd59bf1 100644
--- a/Formula/portable-ruby.rb
+++ b/Formula/portable-ruby.rb
@@ -104,6 +104,8 @@ def install
       inreplace lib/"ruby/#{abi_version}/#{abi_arch}/rbconfig.rb" do |s|
         s.gsub! ENV.cxx, "c++"
         s.gsub! ENV.cc, "cc"
+        # Change e.g. `CONFIG["AR"] = "gcc-ar-11"` to `CONFIG["AR"] = "ar"`
+        s.gsub!(/(CONFIG\[".+"\] = )"gcc-(.*)-\d+"/, '\\1"\\2"')
         # C++ compiler might have been disabled because we break it with glibc@2.13 builds
         s.sub!(/(CONFIG\["CXX"\] = )"false"/, '\\1"c++"')
       end