diff --git a/lucene/CHANGES.txt b/lucene/CHANGES.txt
index b0a53f9e2ce..555492406ee 100644
--- a/lucene/CHANGES.txt
+++ b/lucene/CHANGES.txt
@@ -404,6 +404,8 @@ New Features
 * GITHUB#12479: Add new Maximum Inner Product vector similarity function for non-normalized dot-product
   vector search. (Jack Mazanec, Ben Trent)
 
+* GITHUB#12525: `WordDelimiterGraphFilterFactory` now supports the `ignoreKeywords` flag (Thomas De Craemer)
+
 * GITHUB#12489: Add support for recursive graph bisection, also called
   bipartite graph partitioning, and often abbreviated BP, an algorithm for
   reordering doc IDs that results in more compact postings and faster queries,
diff --git a/lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilterFactory.java b/lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilterFactory.java
index 09ec073bd9b..63634687e2b 100644
--- a/lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilterFactory.java
+++ b/lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/WordDelimiterGraphFilterFactory.java
@@ -45,7 +45,7 @@ import org.apache.lucene.util.ResourceLoaderAware;
  *             preserveOriginal="0" splitOnNumerics="1" splitOnCaseChange="1"
  *             catenateWords="0" catenateNumbers="0" catenateAll="0"
  *             generateWordParts="1" generateNumberParts="1" stemEnglishPossessive="1"
- *             types="wdfftypes.txt" />
+ *             types="wdfftypes.txt" ignoreKeywords="0" />
  *   </analyzer>
  * &lt;/fieldType&gt;</pre>
  *
@@ -100,6 +100,9 @@ public class WordDelimiterGraphFilterFactory extends TokenFilterFactory
     if (getInt(args, "stemEnglishPossessive", 1) != 0) {
       flags |= STEM_ENGLISH_POSSESSIVE;
     }
+    if (getInt(args, "ignoreKeywords", 0) != 0) {
+      flags |= IGNORE_KEYWORDS;
+    }
     wordFiles = get(args, PROTECTED_TOKENS);
     types = get(args, TYPES);
     this.flags = flags;