diff --git a/build.savant b/build.savant
index 2e7b9a4..da8e2b4 100644
--- a/build.savant
+++ b/build.savant
@@ -17,7 +17,7 @@
 savantVersion = "1.0.0"
 jacksonVersion = "2.10.0"
 
-project(group: "io.fusionauth", name: "fusionauth-jwt", version: "3.1.4", licenses: ["ApacheV2_0"]) {
+project(group: "io.fusionauth", name: "fusionauth-jwt", version: "3.1.5", licenses: ["ApacheV2_0"]) {
 
   workflow {
     standard()
diff --git a/pom.xml b/pom.xml
index eaa0de1..183c73d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
   <groupId>io.fusionauth</groupId>
   <artifactId>fusionauth-jwt</artifactId>
-  <version>3.1.4</version>
+  <version>3.1.5</version>
   <packaging>jar</packaging>
 
   <name>FusionAuth JWT</name>
diff --git a/src/main/java/io/fusionauth/jwt/domain/JWT.java b/src/main/java/io/fusionauth/jwt/domain/JWT.java
index 7c229b3..191cbfb 100644
--- a/src/main/java/io/fusionauth/jwt/domain/JWT.java
+++ b/src/main/java/io/fusionauth/jwt/domain/JWT.java
@@ -20,9 +20,11 @@
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import io.fusionauth.jwt.JWTDecoder;
 import io.fusionauth.jwt.JWTEncoder;
 import io.fusionauth.jwt.json.Mapper;
+import io.fusionauth.jwt.json.ZonedDateTimeSerializer;
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
@@ -63,6 +65,7 @@ public class JWT {
    * processing. The expiration time is expected to provided in UNIX time, or the number of seconds since Epoch.
    */
   @JsonProperty("exp")
+  @JsonSerialize(using = ZonedDateTimeSerializer.class)
   public ZonedDateTime expiration;
 
   /**
@@ -72,6 +75,7 @@ public class JWT {
    * UNIX time, or the number of seconds since Epoch.
    */
   @JsonProperty("iat")
+  @JsonSerialize(using = ZonedDateTimeSerializer.class)
   public ZonedDateTime issuedAt;
 
   /**
@@ -90,6 +94,7 @@ public class JWT {
    * expected to provided in UNIX time, or the number of seconds since Epoch.
    */
   @JsonProperty("nbf")
+  @JsonSerialize(using = ZonedDateTimeSerializer.class)
   public ZonedDateTime notBefore;
 
   /**