diff --git a/Gemfile.lock b/Gemfile.lock
index 549a434f0..ddd33f8ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,8 +57,9 @@ GEM
     rake (13.3.1)
     rake-compiler (1.3.1)
       rake
-    rbs (3.10.3)
+    rbs (4.0.0)
       logger
+      prism (>= 1.6.0)
       tsort
     rdoc (7.2.0)
       erb