diff --git a/CHANGELOG.md b/CHANGELOG.md
index f4941429c..507d49a3d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.121.3](https://github.com/stephenh/ts-proto/compare/v1.121.2...v1.121.3) (2022-08-06)
+
+
+### Bug Fixes
+
+* Use underscore separator in snakeToCamel. ([#648](https://github.com/stephenh/ts-proto/issues/648)) ([b374910](https://github.com/stephenh/ts-proto/commit/b374910a8fb1d0efe6c5c5322f8788cc3cc1ca6c))
+
 ## [1.121.2](https://github.com/stephenh/ts-proto/compare/v1.121.1...v1.121.2) (2022-08-06)
 
 
diff --git a/package.json b/package.json
index 65d51a2bd..99bc85e94 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ts-proto",
-  "version": "1.121.2",
+  "version": "1.121.3",
   "description": "",
   "main": "build/plugin.js",
   "repository": "github:stephenh/ts-proto",