diff --git a/justfile b/justfile
index c1ee93f..9ee25d7 100644
--- a/justfile
+++ b/justfile
@@ -8,6 +8,7 @@ build:
   cargo hack test
   cargo doc
   cargo test --example get
+  cargo mutants --jobs 4
 
 install-hooks:
   @echo "Installing git hooks"