diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ff062f0..f5ce0b75 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
+## [4.9.1] - 2020-12-04
+
 ### Added
 - Support commas in JSONPath 
 
@@ -300,6 +302,7 @@ and [169](https://gitlab.ilabt.imec.be/rml/proc/rmlmapper-java/-/issues/169))
 - support for accessing remote files (via HTTP GET)
 - basic support for functions
 
+[4.9.1]: https://github.com/RMLio/rmlmapper-java/compare/v4.9.0...v4.9.1
 [4.9.0]: https://github.com/RMLio/rmlmapper-java/compare/v4.8.2...v4.9.0
 [4.8.2]: https://github.com/RMLio/rmlmapper-java/compare/v4.8.1...v4.8.2
 [4.8.1]: https://github.com/RMLio/rmlmapper-java/compare/v4.8.0...v4.8.1
diff --git a/buildNumber.properties b/buildNumber.properties
index c2f1d2e1..cc47424a 100644
--- a/buildNumber.properties
+++ b/buildNumber.properties
@@ -1,3 +1,3 @@
 #maven.buildNumber.plugin properties file
-#Mon Sep 14 15:21:20 CEST 2020
-buildNumber0=321
+#Fri Dec 04 10:03:25 CET 2020
+buildNumber0=325
diff --git a/pom.xml b/pom.xml
index 551aa276..88620d7c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <groupId>be.ugent.rml</groupId>
     <artifactId>rmlmapper</artifactId>
     <name>RMLMapper</name>
-    <version>4.9.0</version>
+    <version>4.9.1</version>
     <description>
         The RMLMapper executes RML rules to generate high quality Linked Data from multiple originally (semi-)structured data sources.
     </description>