diff --git a/nb-spectest/pom.xml b/nb-spectest/pom.xml
index e0411cbce..9ef75b178 100644
--- a/nb-spectest/pom.xml
+++ b/nb-spectest/pom.xml
@@ -45,7 +45,7 @@
         <dependency>
             <groupId>com.vladsch.flexmark</groupId>
             <artifactId>flexmark-html2md-converter</artifactId>
-            <version>0.64.4</version>
+            <version>0.64.6</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>