diff --git a/lib/rbs/collection/sources/local.rb b/lib/rbs/collection/sources/local.rb
index 1afde557d7..3d508b36bd 100644
--- a/lib/rbs/collection/sources/local.rb
+++ b/lib/rbs/collection/sources/local.rb
@@ -9,9 +9,8 @@ class Local
         attr_reader :path, :full_path
 
         def initialize(path:, base_directory:)
-          # TODO: resolve relative path from dir of rbs_collection.yaml
           @path = Pathname(path)
-          @full_path = base_directory / path
+          @full_path = (base_directory / path).expand_path
         end
 
         def has?(name, version)