diff --git a/Cargo.lock b/Cargo.lock
index 99e7f3d..bc053c7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -949,7 +949,7 @@ dependencies = [
  "syn",
  "thiserror",
  "typify",
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
diff --git a/progenitor-impl/Cargo.toml b/progenitor-impl/Cargo.toml
index 5b62022..4dbd0bc 100644
--- a/progenitor-impl/Cargo.toml
+++ b/progenitor-impl/Cargo.toml
@@ -21,7 +21,7 @@ serde_json = "1.0"
 syn = { version = "1.0", features = ["parsing"] }
 thiserror = "1.0"
 typify = "0.0.8"
-unicode-xid = "0.2"
+unicode-ident = "1.0.0"
 
 [dev-dependencies]
 dropshot = { git = "https://github.com/oxidecomputer/dropshot", default-features = false }
diff --git a/progenitor-impl/src/util.rs b/progenitor-impl/src/util.rs
index f4fe189..6227c6c 100644
--- a/progenitor-impl/src/util.rs
+++ b/progenitor-impl/src/util.rs
@@ -4,7 +4,7 @@ use indexmap::IndexMap;
 use openapiv3::{
     Components, Parameter, ReferenceOr, RequestBody, Response, Schema,
 };
-use unicode_xid::UnicodeXID;
+use unicode_ident::{is_xid_continue, is_xid_start};
 
 use crate::Result;
 
@@ -82,13 +82,13 @@ pub(crate) fn sanitize(input: &str, case: Case) -> String {
         _ => to_case(
             &input
                 .replace("'", "")
-                .replace(|c: char| !c.is_xid_continue(), "-"),
+                .replace(|c: char| !is_xid_continue(c), "-"),
         ),
     };
 
     let out = match out.chars().next() {
         None => to_case("x"),
-        Some(c) if c.is_xid_start() => out,
+        Some(c) if is_xid_start(c) => out,
         Some(_) => format!("_{}", out),
     };