diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a85b6c..c595cf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ Versioned according to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+## [0.9.1] - 2023-10-20
+
 Fixed:
 
   * require OCR-D/core >= 2.58.1, #49
@@ -163,6 +165,7 @@ Fixed:
   * ocrd-tool: add `steps` and `categories`
 
 <!-- link-labels -->
+[0.9.1]: ../../compare/v0.9.1...v0.0.0
 [0.9.0]: ../../compare/v0.9.0...v0.8.0
 [0.8.0]: ../../compare/v0.8.0...v0.7.0
 [0.7.0]: ../../compare/v0.7.0...v0.6.2
diff --git a/ocrd-tool.json b/ocrd-tool.json
index 56dfabc..6d02e41 100644
--- a/ocrd-tool.json
+++ b/ocrd-tool.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.9.0",
+  "version": "0.9.1",
   "git_url": "https://github.com/OCR-D/ocrd_fileformat",
   "tools": {
     "ocrd-fileformat-transform": {