diff --git a/CHANGES.md b/CHANGES.md
index ab05cd4bf..8e72ae593 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,12 @@
 Change Log
 ==========
 
+### 5.1.1 - 2022-04-12
+
+##### Fixes
+* Fixed initialization of GUI extensions. [#244](https://github.com/3dcitydb/importer-exporter/pull/244)
+* Fixed missing srsName on envelopes when using an LoD filer.
+
 ### 5.1.0 - 2022-02-10
 
 ##### Additions
diff --git a/README.md b/README.md
index 4c1f54f15..c526bde44 100644
--- a/README.md
+++ b/README.md
@@ -47,9 +47,9 @@ previous release of the 3D City Database Importer/Exporter under Apache License
 
 Latest release
 --------------
-The latest stable release of the 3D City Database Importer/Exporter is 5.1.0.
+The latest stable release of the 3D City Database Importer/Exporter is 5.1.1.
 
-Download a binary distribution for the software [here](https://github.com/3dcitydb/importer-exporter/releases/download/v5.1.0/3DCityDB-Importer-Exporter-5.1.0.zip).
+Download a binary distribution for the software [here](https://github.com/3dcitydb/importer-exporter/releases/download/v5.1.1/3DCityDB-Importer-Exporter-5.1.1.zip).
 Previous releases are available from the [releases section](https://github.com/3dcitydb/importer-exporter/releases).
 
 System requirements
diff --git a/build.gradle b/build.gradle
index 896e717f0..8b1662972 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 
 apply from: 'properties.gradle'
 
-version '5.1.0'
+version '5.1.1'
 
 subprojects {
     apply plugin: 'java-library'