diff --git a/languagePlayground/pom.xml b/languagePlayground/pom.xml
old mode 100755
new mode 100644
index 947bbaa..5dea193
--- a/languagePlayground/pom.xml
+++ b/languagePlayground/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>28.2-jre</version>
+            <version>29.0-jre</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>