diff --git a/pom.xml b/pom.xml
index 6d03fb7..cf6adf9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>		
 		<jackson.version>[2.9.5,)</jackson.version>
-		<antlr4.version>4.9.2</antlr4.version>
+		<antlr4.version>4.9.3</antlr4.version>
 		<antlr3.version>3.5.2</antlr3.version>
 		<java.version>1.8</java.version>
 		<log4j.version>[2.15.0,)</log4j.version>
@@ -82,7 +82,7 @@
 		<dependency>
 		    <groupId>org.codehaus.plexus</groupId>
 		    <artifactId>plexus-utils</artifactId>
-		    <version>3.3.0</version>
+		    <version>3.4.1</version>
 		</dependency>
 		<dependency>
 			<groupId>org.antlr</groupId>
@@ -155,7 +155,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.30</version>
+			<version>1.7.32</version>
 		</dependency>
 		<dependency>
 			<groupId>eu.clarin.sru.fcs</groupId>