diff --git a/gems/bundled_gems b/gems/bundled_gems
index 8033a260eb..6c34657bc2 100644
--- a/gems/bundled_gems
+++ b/gems/bundled_gems
@@ -13,4 +13,4 @@ matrix 0.4.2 https://github.com/ruby/matrix
 prime 0.1.2 https://github.com/ruby/prime
 rbs 1.6.2 https://github.com/ruby/rbs
 typeprof 0.20.2 https://github.com/ruby/typeprof
-debug 1.3.1 https://github.com/ruby/debug
+debug 1.3.4 https://github.com/ruby/debug