diff --git a/src/main/java/com/inteligr8/rs/HeaderAuthorizationFilter.java b/src/main/java/com/inteligr8/rs/HeaderAuthorizationFilter.java
index dae994b..43d04aa 100644
--- a/src/main/java/com/inteligr8/rs/HeaderAuthorizationFilter.java
+++ b/src/main/java/com/inteligr8/rs/HeaderAuthorizationFilter.java
@@ -30,7 +30,7 @@ import jakarta.ws.rs.client.ClientRequestContext;
  */
 public class HeaderAuthorizationFilter implements AuthorizationFilter {
 	
-	private final MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
+	private final MultiValueMap<String, Object> headers = new LinkedMultiValueMap<>();
 	
 	/**
 	 * This constructor instantiates the filter with required fields.
@@ -38,7 +38,7 @@ public class HeaderAuthorizationFilter implements AuthorizationFilter {
 	 * @param headerName A header name.
 	 * @param headerValue A header value.
 	 */
-    public HeaderAuthorizationFilter(String headerName, String headerValue) {
+    public HeaderAuthorizationFilter(String headerName, Object headerValue) {
 	    this.headers.add(headerName, headerValue);
 	}
     
@@ -49,7 +49,7 @@ public class HeaderAuthorizationFilter implements AuthorizationFilter {
 	 * @param headerValue A header value.
 	 * @return This class for fluent chaining.
 	 */
-    public HeaderAuthorizationFilter add(String headerName, String headerValue) {
+    public HeaderAuthorizationFilter add(String headerName, Object headerValue) {
         this.headers.add(headerName, headerValue);
         return this;
     }
@@ -61,8 +61,8 @@ public class HeaderAuthorizationFilter implements AuthorizationFilter {
 	 */
 	@Override
 	public void filter(ClientRequestContext requestContext) throws UnsupportedEncodingException {
-	    for (Entry<String, List<String>> header : this.headers.entrySet())
-	        requestContext.getHeaders().addAll(header.getKey(), header.getValue());
+	    for (Entry<String, List<Object>> header : this.headers.entrySet())
+	        requestContext.getHeaders().put(header.getKey(), header.getValue());
 	}
 
 }