diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab1d78d..ff4551f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 # Change Log
+## [v3.1.1](https://github.com/NETWAYS/icingaweb2-module-grafana/tree/v3.1.1) (2025-04-30)
+
+**Fixes**
+- Fix invalid return value for getPreviewHTML
+
 ## [v3.1.0](https://github.com/NETWAYS/icingaweb2-module-grafana/tree/v3.1.0) (2025-04-14)
 
 **Features**
@@ -7,7 +12,6 @@
 - Reintroduce configuration option for default theme
 - Allow comma separated panel ID lists
 
-# Change Log
 ## [v3.0.1](https://github.com/NETWAYS/icingaweb2-module-grafana/tree/v3.0.0) (2025-02-03)
 
 **Fixes**
diff --git a/module.info b/module.info
index f88106c..a37f830 100644
--- a/module.info
+++ b/module.info
@@ -1,5 +1,5 @@
 Name: Grafana
-Version: 3.1.0
+Version: 3.1.1
 Requires:
   Libraries: icinga-php-library (>=0.10.1)
   Modules: icingadb (>=1.0.0)