diff --git a/pom.xml b/pom.xml
index ce700d6..46e04d1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     </developers>
 
     <properties>
-        <postmark.version>1.7.6</postmark.version>
+        <postmark.version>1.8.0</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>
@@ -135,7 +135,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.1</version>
+                <version>3.8.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
diff --git a/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureDetails.java b/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureDetails.java
index 29808c4..a9e67df 100644
--- a/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureDetails.java
+++ b/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureDetails.java
@@ -11,6 +11,7 @@ public class SignatureDetails extends DomainDetails {
     private String emailAddress;
     private String replyToEmailAddress;
     private Boolean confirmed;
+    private String confirmationPersonalNote;
 
     // SETTERS AND GETTERS
 
@@ -45,4 +46,10 @@ public Boolean getConfirmed() {
     public void setConfirmed(Boolean confirmed) {
         this.confirmed = confirmed;
     }
+
+    public String getConfirmationPersonalNote() { return confirmationPersonalNote; }
+
+    public void setConfirmationPersonalNote(String confirmationPersonalNote) {
+        this.confirmationPersonalNote = confirmationPersonalNote;
+    }
 }
diff --git a/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureToCreate.java b/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureToCreate.java
index ea090c4..89d1b66 100644
--- a/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureToCreate.java
+++ b/src/main/java/com/wildbit/java/postmark/client/data/model/senders/SignatureToCreate.java
@@ -9,6 +9,7 @@ public class SignatureToCreate {
     private String name;
     private String replyToEmail;
     private String returnPathDOmain;
+    private String confirmationPersonalNote;
 
     // SETTERS AND GETTERS
 
@@ -43,4 +44,10 @@ public String getReturnPathDOmain() {
     public void setReturnPathDOmain(String returnPathDOmain) {
         this.returnPathDOmain = returnPathDOmain;
     }
+
+    public String getConfirmationPersonalNote() { return confirmationPersonalNote; }
+
+    public void setConfirmationPersonalNote(String confirmationPersonalNote) {
+        this.confirmationPersonalNote = confirmationPersonalNote;
+    }
 }