diff --git a/.repo/nvchecker.toml b/.repo/nvchecker.toml
index c8d2aa9..a7b40d6 100644
--- a/.repo/nvchecker.toml
+++ b/.repo/nvchecker.toml
@@ -724,6 +724,30 @@ use_max_tag = true
 
 # gems
 
+[ruby-nanoc]
+source = "gems"
+gems = "nanoc"
+
+[ruby-tty-which]
+source = "gems"
+gems = "tty-which"
+
+[ruby-tty-command]
+source = "gems"
+gems = "tty-command"
+
+[ruby-pastel]
+source = "gems"
+gems = "pastel"
+
+[ruby-tty-color]
+source = "gems"
+gems = "tty-color"
+
+[ruby-colored]
+source = "gems"
+gems = "colored"
+
 [ruby-nanoc-core]
 source = "gems"
 gems = "nanoc-core"