diff --git a/Gemfile.lock b/Gemfile.lock
index 441f9fa..692f2d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,8 +15,9 @@ GEM
     docile (1.4.1)
     erb (6.0.1)
     io-console (0.8.2)
-    irb (1.16.0)
+    irb (1.17.0)
       pp (>= 0.6.0)
+      prism (>= 1.3.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.18.0)
@@ -36,7 +37,7 @@ GEM
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.3.1)
-    rdoc (7.0.3)
+    rdoc (7.2.0)
       erb
       psych (>= 4.0.0)
       tsort