diff --git a/mise.toml b/mise.toml
index ffbd3a8..ca3c768 100644
--- a/mise.toml
+++ b/mise.toml
@@ -3,6 +3,7 @@
 DATABASE_URL = "sqlite:///database.db"
 
 [tools]
+difftastic = "latest"
 markdownlint-cli2 = "latest"
 prek = "latest"
 python = "3.14"