diff --git a/pmd/pmd_modified/pmd_modified/pmd-core/pom.xml b/pmd/pmd_modified/pmd_modified/pmd-core/pom.xml
index e1063e97..03034fde 100644
--- a/pmd/pmd_modified/pmd_modified/pmd-core/pom.xml
+++ b/pmd/pmd_modified/pmd_modified/pmd-core/pom.xml
@@ -140,7 +140,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>