diff --git a/Gemfile b/Gemfile
index 267acf61c65..15e7afda0ba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -17,7 +17,7 @@ group :development do
 
   # building extensions
   gem "rake-compiler", "1.2.7"
-  gem "rake-compiler-dock", "1.5.0"
+  gem "rake-compiler-dock", "1.5.1"
 
   # parser generator
   gem "rexical", "1.0.8"