diff --git a/nb-spectest/pom.xml b/nb-spectest/pom.xml
index e00b5fab3..e0411cbce 100644
--- a/nb-spectest/pom.xml
+++ b/nb-spectest/pom.xml
@@ -40,7 +40,7 @@
         <dependency>
             <groupId>com.vladsch.flexmark</groupId>
             <artifactId>flexmark-ext-yaml-front-matter</artifactId>
-            <version>0.64.0</version>
+            <version>0.64.4</version>
         </dependency>
         <dependency>
             <groupId>com.vladsch.flexmark</groupId>