diff --git a/pom.xml b/pom.xml
index 57fcdf8..22cc271 100644
--- a/pom.xml
+++ b/pom.xml
@@ -74,7 +74,7 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.3</version>
+			<version>4.3.1</version>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
@@ -84,7 +84,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-log4j12</artifactId>
-			<version>1.7.5</version>
+			<version>1.7.34</version>
 		</dependency>
 		<dependency>
 			<groupId>com.mashape.unirest</groupId>
@@ -94,7 +94,7 @@
 		<dependency>
 			<groupId>com.sparkjava</groupId>
 			<artifactId>spark-core</artifactId>
-			<version>2.7.2</version>
+			<version>2.9.4</version>
 		</dependency>
 		<dependency>
 			<groupId>org.freemarker</groupId>