diff --git a/dictionary-builder/Cargo.toml b/dictionary-builder/Cargo.toml
index 0240dfe22..651e822ba 100644
--- a/dictionary-builder/Cargo.toml
+++ b/dictionary-builder/Cargo.toml
@@ -18,10 +18,10 @@ path = "src/main.rs"
 clap = "2.18.0"
 serde = { version = "1.0.55", features = ["derive"] }
 serde_json = "1.0.17"
-heck = "0.3.1"
+heck = "0.4.0"
 ureq = "2.4.0"
 
 [dependencies.regex]
-version = "1.1.0"
+version = "1.6.0"
 default-features = false
 features = ["std", "perf", "unicode-case", "unicode-perl"]
diff --git a/dictionary-builder/src/main.rs b/dictionary-builder/src/main.rs
index d407bea2d..832f828d4 100644
--- a/dictionary-builder/src/main.rs
+++ b/dictionary-builder/src/main.rs
@@ -13,7 +13,7 @@ use clap::{App, Arg};
 use regex::Regex;
 use serde::Serialize;
 
-use heck::ShoutySnakeCase;
+use heck::ToShoutySnakeCase;
 use std::borrow::Cow;
 use std::io::{BufRead, BufReader, Write};
 use std::path::Path;