diff --git a/gems/bundled_gems b/gems/bundled_gems
index 32b62fe8c4..1d24ca0e52 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -12,4 +12,4 @@ net-smtp 0.2.1 https://github.com/ruby/net-smtp
 matrix 0.4.1 https://github.com/ruby/matrix
 prime 0.1.2 https://github.com/ruby/prime
 typeprof 0.14.1 https://github.com/ruby/typeprof
-rbs 1.2.0 https://github.com/ruby/rbs
+rbs 1.2.0 https://github.com/ruby/rbs cbeff55