diff --git a/extensions/vw/pdfjs/wicket/integration/pom.xml b/extensions/vw/pdfjs/wicket/integration/pom.xml
index 9dcbfcb18a7..0742b572340 100644
--- a/extensions/vw/pdfjs/wicket/integration/pom.xml
+++ b/extensions/vw/pdfjs/wicket/integration/pom.xml
@@ -53,7 +53,7 @@
 		    <groupId>org.webjars.npm</groupId>
 		    <artifactId>pdfjs-dist</artifactId>
 		    <!--  keep in sync with o.a.i.extensions.pdfjs.wkt.integration.PdfJsVersion -->
-		    <version>4.6.82</version>
+		    <version>4.9.155</version>
 		</dependency>
 
 	</dependencies>
diff --git a/extensions/vw/pdfjs/wicket/integration/src/main/java/org/apache/causeway/extensions/pdfjs/wkt/integration/PdfJsVersion.java b/extensions/vw/pdfjs/wicket/integration/src/main/java/org/apache/causeway/extensions/pdfjs/wkt/integration/PdfJsVersion.java
index 414d0c205fb..68185381814 100644
--- a/extensions/vw/pdfjs/wicket/integration/src/main/java/org/apache/causeway/extensions/pdfjs/wkt/integration/PdfJsVersion.java
+++ b/extensions/vw/pdfjs/wicket/integration/src/main/java/org/apache/causeway/extensions/pdfjs/wkt/integration/PdfJsVersion.java
@@ -27,7 +27,7 @@
 public enum PdfJsVersion {
     V2_X("v2x3x", "pdfjs-dist/2.16.105", JavaScriptReferenceType.TEXT_JAVASCRIPT),
     V3_X("v2x3x", "pdfjs-dist/3.11.174", JavaScriptReferenceType.TEXT_JAVASCRIPT),
-    V4_X("v4", "pdfjs-dist/4.6.82", JavaScriptReferenceType.MODULE)
+    V4_X("v4", "pdfjs-dist/4.9.155", JavaScriptReferenceType.MODULE)
     ;
     @Getter private final String integrationScriptSuffix;
     @Getter private final String webjarPath;