1 files changed, 2 insertions, 1 deletions
diff --git a/tool/rdoc-srcdir b/tool/rdoc-srcdir
index 03e5171650..a6a3c9ee24 100755
--- a/tool/rdoc-srcdir
+++ b/tool/rdoc-srcdir
@@ -1,6 +1,7 @@
 #!ruby -W0
 
-$:.unshift(File.expand_path("../lib", __dir__))
+rdoc_path = Dir.glob("#{ARGV[0]}/.bundle/gems/rdoc-*").first
+$LOAD_PATH.unshift("#{rdoc_path}/lib")
 require 'rdoc/rdoc'
 
 # Make only the output directory relative to the invoked directory.