diff --git a/Cargo.toml b/Cargo.toml
index 02aaef7d0..d0372c17c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,6 +40,11 @@ version = "0.19.3"
 optional = true
 default-features = false
 
+[dependencies.funty]
+version = ">1.0, <=1.1"
+optional = true
+default-features = false
+
 [dependencies.regex]
 version = "^1.0"
 optional = true