diff --git a/Cargo.lock b/Cargo.lock
index 10d31dc43095c9f48caa5329d89f506f85f39467..848cf82ca247756b436125d357dcd693f408eeb5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -499,7 +499,7 @@ dependencies = [
  "env_logger",
  "funty 2.0.0",
  "futures",
- "heck",
+ "heck 0.4.0",
  "hex",
  "impl-serde",
  "log",
@@ -1334,6 +1334,12 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "heck"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.18"
@@ -3364,7 +3370,7 @@ version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcb5ae327f9cc13b68763b5749770cb9e048a99bd9dfdfa58d0cf05d5f64afe0"
 dependencies = [
- "heck",
+ "heck 0.3.3",
  "proc-macro-error",
  "proc-macro2",
  "quote",
@@ -3386,7 +3392,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0054a7df764039a6cd8592b9de84be4bec368ff081d203a7d5371cbfa8e65c81"
 dependencies = [
- "heck",
+ "heck 0.3.3",
  "proc-macro2",
  "quote",
  "syn",
@@ -3449,7 +3455,7 @@ version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d47ddc15af08feb25287ba1eea618773192d9e9b28eef6ce615f51cf342fd147"
 dependencies = [
- "heck",
+ "heck 0.3.3",
  "proc-macro-crate",
  "proc-macro-error",
  "proc-macro2",
diff --git a/Cargo.toml b/Cargo.toml
index d5f31c20150c61e78199e48555b0d09077557060..25b861e29a81d3cfe72229614f2515d8adfeafee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ env_logger = "0.9.0"
 anyhow = "1.0.51"
 structopt = "0.3.25"
 log = "0.4.14"
-heck = "0.3.3"
+heck = "0.4.0"
 zip = { version = "0.5.13", default-features = false }
 parity-wasm = "0.42.2"
 cargo_metadata = "0.14.1"
diff --git a/src/cmd/new.rs b/src/cmd/new.rs
index 23eccd4096e71c70630d7564548e8a883c6eec37..a2fbae4b3fecaad8990a06beb46a988f53b42c62 100644
--- a/src/cmd/new.rs
+++ b/src/cmd/new.rs
@@ -21,7 +21,7 @@ use std::{
 };
 
 use anyhow::Result;
-use heck::CamelCase as _;
+use heck::ToUpperCamelCase as _;
 
 pub(crate) fn execute<P>(name: &str, dir: Option<P>) -> Result<Option<String>>
 where
@@ -64,7 +64,7 @@ where
 
         // replace template placeholders
         let contents = contents.replace("{{name}}", name);
-        let contents = contents.replace("{{camel_name}}", &name.to_camel_case());
+        let contents = contents.replace("{{camel_name}}", &name.to_upper_camel_case());
 
         let outpath = out_dir.join(file.name());