diff --git a/pom.xml b/pom.xml
index a112fa7..0d7bc21 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,7 +24,7 @@
     </developers>
 
     <properties>
-        <postmark.version>1.2.2</postmark.version>
+        <postmark.version>1.2.3</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>