diff --git a/jaxrs-api/src/main/java/jakarta/ws/rs/container/ContainerResponseContext.java b/jaxrs-api/src/main/java/jakarta/ws/rs/container/ContainerResponseContext.java
index e954c04..8401844 100644
--- a/jaxrs-api/src/main/java/jakarta/ws/rs/container/ContainerResponseContext.java
+++ b/jaxrs-api/src/main/java/jakarta/ws/rs/container/ContainerResponseContext.java
@@ -123,12 +123,13 @@
      *
      * @param name the message header.
      * @param value the message header value.
+     * @param ignoreCase whether to ignore upper/lower case.
      * @return {@code true} if and only if a header with the provided name exists having either the exact value or whose
      * comma-separated header string contains value as a whole word.
      * @see #getHeaders()
      * @see #getHeaderString(String)
      */
-    public boolean containsHeaderValue(String name, String value);
+    public boolean containsHeaderValue(String name, String value, boolean ignoreCase);
 
     /**
      * Get the allowed HTTP methods from the Allow HTTP header.