diff --git a/Cargo.toml b/Cargo.toml
index 5323855..7797832 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,7 @@ zeroize = { version = "1.5", features = ["zeroize_derive"], optional = true }
 
 # Unexported dependnecies
 bitcoin_hashes = { version = "0.11.0", default-features = false }
-unicode-normalization = { version = "=0.1.9", optional = true }
+unicode-normalization = { version = "=0.1.22", optional = true }
 
 [dev-dependencies]
 rand_core = { version = "0.6.4", optional = false }