diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a7ec76b0..5f38ff4e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@
 
 ### Fixes and improvements
 
+## [v2.21.1](https://github.com/OpenNMT/CTranslate2/releases/tag/v2.21.1) (2022-07-29)
+
+### Fixes and improvements
+
+* Fix conversion of NLLB models when `tokenizer_class` is missing from the configuration
+
 ## [v2.21.0](https://github.com/OpenNMT/CTranslate2/releases/tag/v2.21.0) (2022-07-27)
 
 ### New features
diff --git a/python/ctranslate2/version.py b/python/ctranslate2/version.py
index dde0d9295..5ed8e7dcd 100644
--- a/python/ctranslate2/version.py
+++ b/python/ctranslate2/version.py
@@ -1,3 +1,3 @@
 """Version information."""
 
-__version__ = "2.21.0"
+__version__ = "2.21.1"