diff --git a/pom.xml b/pom.xml
index 4e873fa..e74ccf0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -63,7 +63,7 @@
     <cdap.version>6.8.0</cdap.version>
     <cdap.plugin.version>2.10.0</cdap.plugin.version>
     <hadoop.version>2.10.2</hadoop.version>
-    <httpclient.version>4.3.4</httpclient.version>
+    <httpclient.version>4.5.13</httpclient.version>
     <jackson.core.version>2.8.11.1</jackson.core.version>
     <junit.version>4.12</junit.version>
     <slf4j.version>1.7.5</slf4j.version>
@@ -253,7 +253,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.2.8</version>
+      <version>1.3.15</version>
     </dependency>
     <dependency>
       <groupId>org.json</groupId>