diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index b25e51ea..e85df6a0
--- a/pom.xml
+++ b/pom.xml
@@ -165,7 +165,7 @@
     <dependency>
       <groupId>com.typesafe.akka</groupId>
       <artifactId>akka-actor_2.11</artifactId>
-      <version>2.5.4</version>
+      <version>2.5.16</version>
     </dependency>
     <dependency>
       <groupId>com.typesafe.akka</groupId>