diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c42dfe..0246906 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.9.1
+
+* updated data models to latest version for stats and webhooks
+* updated jackson to version 2.14.1
+
 ## 1.9.0
 
 * library was migrated to a different groupid, make sure to update your pom.xml
diff --git a/pom.xml b/pom.xml
index 7bb090c..ef662b7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     </developers>
 
     <properties>
-        <postmark.version>1.9.0</postmark.version>
+        <postmark.version>1.9.1</postmark.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
         <jackson.minimum.version>2.9.7</jackson.minimum.version>