diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/auth/HttpSignatureAuth.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/auth/HttpSignatureAuth.mustache
index 744f9f6bd4..787bef3db0 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/auth/HttpSignatureAuth.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/auth/HttpSignatureAuth.mustache
@@ -49,6 +49,9 @@ public class HttpSignatureAuth implements Authentication {
   // The digest algorithm which is used to calculate a cryptographic digest of the HTTP request body.
   private String digestAlgorithm;
 
+  // The maximum validity duration of the HTTP signature. 
+  private Long maxSignatureValidity;
+
   /**
    * Construct a new HTTP signature auth configuration object.
    *
@@ -57,19 +60,23 @@ public class HttpSignatureAuth implements Authentication {
    * @param algorithm The cryptographic algorithm.
    * @param digestAlgorithm The digest algorithm.
    * @param headers The list of HTTP headers that should be included in the HTTP signature.
+   * @param maxSignatureValidity The maximum validity duration of the HTTP signature.
+   *                             Used to set the '(expires)' field in the HTTP signature.
    */
   public HttpSignatureAuth(String keyId,
                            SigningAlgorithm signingAlgorithm,
                            Algorithm algorithm,
                            String digestAlgorithm,
                            AlgorithmParameterSpec parameterSpec,
-                           List<String> headers) {
+                           List<String> headers,
+                           Long maxSignatureValidity) {
     this.keyId = keyId;
     this.signingAlgorithm = signingAlgorithm;
     this.algorithm = algorithm;
     this.parameterSpec = parameterSpec;
     this.digestAlgorithm = digestAlgorithm;
     this.headers = headers;
+    this.maxSignatureValidity = maxSignatureValidity;
   }
 
   /**
@@ -179,6 +186,14 @@ public class HttpSignatureAuth implements Authentication {
     this.headers = headers;
   }
 
+  /**
+   * Returns the maximum validity duration of the HTTP signature.
+   * @return The maximum validity duration of the HTTP signature.
+   */
+  public Long getMaxSignatureValidity() {
+    return maxSignatureValidity;
+  }
+
   /**
    * Returns the signer instance used to sign HTTP messages.
    *
@@ -209,7 +224,7 @@ public class HttpSignatureAuth implements Authentication {
     if (key == null) {
       throw new ApiException("Private key (java.security.Key) cannot be null");
     }
-    signer = new Signer(key, new Signature(keyId, signingAlgorithm, algorithm, parameterSpec, null, headers));
+    signer = new Signer(key, new Signature(keyId, signingAlgorithm, algorithm, parameterSpec, null, headers, maxSignatureValidity));
   }
 
   @Override
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/pom.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/pom.mustache
index 155f306546..4b6850ff23 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/pom.mustache
@@ -407,7 +407,7 @@
         <javax-annotation-version>1.3.2</javax-annotation-version>
         <junit-version>4.13</junit-version>
         {{#hasHttpSignatureMethods}}
-        <http-signature-version>1.4</http-signature-version>
+        <http-signature-version>1.5</http-signature-version>
         {{/hasHttpSignatureMethods}}
         {{#hasOAuthMethods}}
         <scribejava-apis-version>6.9.0</scribejava-apis-version>
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/pom.xml b/samples/openapi3/client/petstore/java/jersey2-java8/pom.xml
index 934db7c5ca..6a6527cd13 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/pom.xml
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/pom.xml
@@ -308,7 +308,7 @@
         <jackson-databind-nullable-version>0.2.1</jackson-databind-nullable-version>
         <javax-annotation-version>1.3.2</javax-annotation-version>
         <junit-version>4.13</junit-version>
-        <http-signature-version>1.4</http-signature-version>
+        <http-signature-version>1.5</http-signature-version>
         <scribejava-apis-version>6.9.0</scribejava-apis-version>
     </properties>
 </project>
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/auth/HttpSignatureAuth.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/auth/HttpSignatureAuth.java
index c1222a7fff..a85f4ae3a8 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/auth/HttpSignatureAuth.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/auth/HttpSignatureAuth.java
@@ -60,6 +60,9 @@ public class HttpSignatureAuth implements Authentication {
   // The digest algorithm which is used to calculate a cryptographic digest of the HTTP request body.
   private String digestAlgorithm;
 
+  // The maximum validity duration of the HTTP signature. 
+  private Long maxSignatureValidity;
+
   /**
    * Construct a new HTTP signature auth configuration object.
    *
@@ -68,19 +71,23 @@ public class HttpSignatureAuth implements Authentication {
    * @param algorithm The cryptographic algorithm.
    * @param digestAlgorithm The digest algorithm.
    * @param headers The list of HTTP headers that should be included in the HTTP signature.
+   * @param maxSignatureValidity The maximum validity duration of the HTTP signature.
+   *                             Used to set the '(expires)' field in the HTTP signature.
    */
   public HttpSignatureAuth(String keyId,
                            SigningAlgorithm signingAlgorithm,
                            Algorithm algorithm,
                            String digestAlgorithm,
                            AlgorithmParameterSpec parameterSpec,
-                           List<String> headers) {
+                           List<String> headers,
+                           Long maxSignatureValidity) {
     this.keyId = keyId;
     this.signingAlgorithm = signingAlgorithm;
     this.algorithm = algorithm;
     this.parameterSpec = parameterSpec;
     this.digestAlgorithm = digestAlgorithm;
     this.headers = headers;
+    this.maxSignatureValidity = maxSignatureValidity;
   }
 
   /**
@@ -190,6 +197,14 @@ public class HttpSignatureAuth implements Authentication {
     this.headers = headers;
   }
 
+  /**
+   * Returns the maximum validity duration of the HTTP signature.
+   * @return The maximum validity duration of the HTTP signature.
+   */
+  public Long getMaxSignatureValidity() {
+    return maxSignatureValidity;
+  }
+
   /**
    * Returns the signer instance used to sign HTTP messages.
    *
@@ -220,7 +235,7 @@ public class HttpSignatureAuth implements Authentication {
     if (key == null) {
       throw new ApiException("Private key (java.security.Key) cannot be null");
     }
-    signer = new Signer(key, new Signature(keyId, signingAlgorithm, algorithm, parameterSpec, null, headers));
+    signer = new Signer(key, new Signature(keyId, signingAlgorithm, algorithm, parameterSpec, null, headers, maxSignatureValidity));
   }
 
   @Override