diff --git a/CHANGELOG.md b/CHANGELOG.md
index da2e1c0..cf6263d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@ Versioned according to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+## [0.3.1] - 2024-08-27
+
+Fixed:
+
+  * regression in OCR-D processor, #106
+  * Expected Ptrcv::UMat for argument 'contour', #110
+  * Memory usage explosion with very narrow images (e.g. book spine), #67
+
 ## [0.3.0] - 2023-05-13
 
 Changed:
@@ -117,6 +125,8 @@ Fixed:
 Initial release
 
 <!-- link-labels -->
+[0.3.1]: ../../compare/v0.3.1...v0.3.0
+[0.3.0]: ../../compare/v0.3.0...v0.2.0
 [0.2.0]: ../../compare/v0.2.0...v0.1.0
 [0.1.0]: ../../compare/v0.1.0...v0.0.11
 [0.0.11]: ../../compare/v0.0.11...v0.0.10
diff --git a/pyproject.toml b/pyproject.toml
index 9e610c4..637aff0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools>=61.0", "wheel", "setuptools-ocrd"]
 
 [project]
 name = "eynollah"
-version = "0.3.0"
+version = "0.3.1"
 authors = [
     {name = "Vahid Rezanezhad"},
     {name = "Staatsbibliothek zu Berlin - Preußischer Kulturbesitz"},
diff --git a/qurator/eynollah/ocrd-tool.json b/qurator/eynollah/ocrd-tool.json
index 2da970d..aad32dd 100644
--- a/qurator/eynollah/ocrd-tool.json
+++ b/qurator/eynollah/ocrd-tool.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.3.0",
+  "version": "0.3.1",
   "git_url": "https://github.com/qurator-spk/eynollah",
   "tools": {
     "ocrd-eynollah-segment": {