diff --git a/Cargo.toml b/Cargo.toml
index ffd060c7..74d92860 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ smallvec = "1.0"
 # Optional dependencies
 cssparser-macros = { path = "./macros", version = "0.7.0", optional = true }
 malloc_size_of = { version = "0.1", default-features = false, optional = true }
-phf = { version = "0.13.1", features = ["macros"], optional = true }
+phf = { version = "0.14.0", features = ["macros"], optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }
 
 [dev-dependencies]