diff --git a/pom.xml b/pom.xml
index 9219cea..8f254f8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
 		<dependency>
 			<groupId>net.sourceforge.owlapi</groupId>
 			<artifactId>owlapi-distribution</artifactId>
-			<version>4.5.6</version>
+			<version>4.5.17</version>
 		</dependency>
 
 		<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
@@ -57,7 +57,7 @@
 		<dependency>
 			<groupId>org.yaml</groupId>
 			<artifactId>snakeyaml</artifactId>
-			<version>1.24</version>
+			<version>1.31</version>
 		</dependency>
 		<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
 		<dependency>
@@ -68,7 +68,7 @@
 		<dependency>
 			<groupId>com.fasterxml.jackson.datatype</groupId>
 			<artifactId>jackson-datatype-guava</artifactId>
-			<version>2.9.4</version>
+			<version>2.9.10</version>
 		</dependency>
 
 	</dependencies>