diff --git a/Cargo.toml b/Cargo.toml
index a9759e1..05e30e5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,7 +41,7 @@ serde_json = "1.0.114"
 
 [build-dependencies]
 git2 = { version = "0.18.2", default-features = false }
-heck = "0.4.1"
+heck = "0.5.0"
 pbjson-build = { version = "0.6.2", optional = true }
 prettyplease = "0.2.4"
 prost-build = { version = "0.12.3", default-features = false }