diff --git a/libertree-client-rb/Gemfile.lock b/libertree-client-rb/Gemfile.lock
index 726f06c0..c85e4110 100644
--- a/libertree-client-rb/Gemfile.lock
+++ b/libertree-client-rb/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
     nokogiri (1.5.11)
     parkdown (1.4.25)
     pg (0.17.1)
-    rake (10.1.1)
+    rake (13.0.1)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
       rspec-expectations (~> 2.12.0)